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For more information, click on a species listed below, or click a letter to jump to that part of the list, or use the form below to shorten the list. Click a column heading to change the sort order. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| | Common name | Scientific name | BirdGuides rarity level | Cat. |
| | Nisaetus nanus | Ungraded | |
| Synthliboramphus scrippsi | Ungraded | |
| Accentor, Alpine | Prunella collaris | Mega | |
| Accentor, Altai | Prunella himalayana | Ungraded | |
| Accentor, Black-throated | Prunella atrogularis | Mega | |
| Accentor, Brown | Prunella fulvescens | Ungraded | |
| Accentor, Japanese | Prunella rubida | Ungraded | |
| Accentor, Radde's | Prunella ocularis | Mega | |
| Accentor, Robin | Prunella rubeculoides | Ungraded | |
| Accentor, Rufous-breasted | Prunella strophiata | Ungraded | |
| Accentor, Siberian | Prunella montanella | Mega | |
| Accentor, Yemen | Prunella fagani | Ungraded | |
| Accipitriformes | Accipitriformes | Ungraded | |
| Acrocephalus sp. | Acrocephalus sp. | Rare | |
| Adjutant, Greater | Leptoptilos dubius | Ungraded | |
| Adjutant, Lesser | Leptoptilos javanicus | Ungraded | |
| Akalat, Equatorial | Sheppardia aequatorialis | Ungraded | |
| Akiapolaau | Hemignathus munroi | Ungraded | |
| Albatross sp. | Diomedeidae | Mega | |
| Albatross, Black-browed | Thalassarche melanophris | Mega | |
| Albatross, Black-footed | Phoebastria nigripes | Ungraded | |
| Albatross, Buller's | Diomedea bulleri | Ungraded | |
| Albatross, Campbell | Thalassarche impavida | Ungraded | |
| Albatross, Chatham | Thalassarche eremita | Ungraded | |
| Albatross, Gibson's | Diomedea exulans gibsoni | Ungraded | |
| Albatross, Grey-headed | Thalassarche chrysostoma | Ungraded | |
| Albatross, Indian Yellow-nosed | Thalassarche carteri | Ungraded | |
| Albatross, Laysan | Phoebastria immutabilis | Ungraded | |
| Albatross, Light-mantled | Phoebetria palpebrata | Ungraded | |
| Albatross, Northern Royal | Diomedea sanfordi | Ungraded | |
| Albatross, Royal | Diomedea epomophora | Ungraded | |
| Albatross, Salvin's | Thalassarche salvini | Ungraded | |
| Albatross, Short-tailed | Phoebastria albatrus | Ungraded | |
| Albatross, Shy | Thalassarche cauta | Ungraded | |
| Albatross, Sooty | Phoebetria fusca | Ungraded | |
| Albatross, Tristan | Diomedea dabbenena | Ungraded | |
| Albatross, Wandering | Diomedea exulans | Ungraded | |
| Albatross, Waved | Diomedea irrorata | Ungraded | |
| Albatross, White-capped | Thalassarche cauta steadi | Ungraded | |
| Albatross, Yellow-nosed | Thalassarche chlororhynchos | Mega | |
| Amakihi, Oahu | Hemignathus flavus | Ungraded | |
| Amazon, Festive | Amazona festiva | Ungraded | |
| Amazon, Red-lored | Amazona autumnalis | Ungraded | |
| Amazon, Red-necked | Amazona arausiaca | Ungraded | |
| Amazon, St. Lucia | Amazona versicolor | Ungraded | |
| Amazon, White-fronted | Amazona albifrons | Ungraded | |
| American sparrow sp. | | Mega | |
| Anhinga | Anhinga anhinga | Ungraded | |
| Ani, Greater | Crotophaga major | Ungraded | |
| Ani, Groove-billed | Crotophaga sulcirostris | Ungraded | |
| Ani, Smooth-billed | Crotophaga ani | Ungraded | |
| Anseriformes | Anseriformes | Ungraded | |
| Anserini | Anserini | Ungraded | |
| Antbird, Bananal | Cercomacra ferdinandi | Ungraded | |
| Antbird, Bicolored | Gymnopithys leucaspis | Ungraded | |
| Antbird, Black-faced | Myrmoborus myotherinus | Ungraded | |
| Antbird, Chestnut-backed | Myrmeciza exsul | Ungraded | |
| Antbird, Dusky | Cercomacra tyrannina | Ungraded | |
| Antbird, Dusky-tailed | Drymophila malura | Ungraded | |
| Antbird, Ferruginous-backed | Myrmeciza ferruginea | Ungraded | |
| Antbird, Grey | Cercomacra cinerascens | Ungraded | |
| Antbird, Guianan Warbling | Hypocnemis cantator | Ungraded | |
| Antbird, Immaculate | Myrmeciza immaculata | Ungraded | |
| Antbird, Jet | Cercomacra nigricans | Ungraded | |
| Antbird, Long-tailed | Drymophila caudata | Ungraded | |
| Antbird, Manu | Cercomacra manu | Ungraded | |
| Antbird, Ocellated | Phaenostictus mcleannani | Ungraded | |
| Antbird, Ochre-rumped | Drymophila ochropyga | Ungraded | |
| Antbird, Plumbeous | Myrmeciza hyperythra | Ungraded | |
| Antbird, Rio Branco | Cercomacra carbonaria | Ungraded | |
| Antbird, Rufous-tailed | Drymophila genei | Ungraded | |
| Antbird, Scaled | Drymophila squamata | Ungraded | |
| Antbird, Silvered | Sclateria naevia | Ungraded | |
| Antbird, Slender | Rhopornis ardesiacus | Ungraded | |
| Antbird, Spotted | Hylophylax naevioides | Ungraded | |
| Antbird, White-plumed | Pithys albifrons | Ungraded | |
| Antpecker, Woodhouse's | Parmoptila woodhousei | Ungraded | |
| Antpitta, Bicolored | Grallaria rufocinerea | Ungraded | |
| Antpitta, Brown-banded | Grallaria milleri | Ungraded | |
| Antpitta, Chestnut-crowned | Grallaria ruficapilla | Ungraded | |
| Antpitta, Chestnut-naped | Grallaria nuchalis | Ungraded | |
| Antpitta, Giant | Grallaria gigantea | Ungraded | |
| Antpitta, Jocotoco | Grallaria ridgelyi | Ungraded | |
| Antpitta, Moustached | Grallaria alleni | Ungraded | |
| Antpitta, Ochre-breasted | Grallaricula flavirostris | Ungraded | |
| Antpitta, Rufous | Grallaria rufula | Ungraded | |
| Antpitta, Rufous-crowned | Pittasoma rufopileatum | Ungraded | |
| Antpitta, Scaled | Grallaria guatimalensis | Ungraded | |
| Antpitta, Slate-crowned | Grallaricula nana | Ungraded | |
| Antpitta, Spectacled | Hylopezus perspicillatus | Ungraded | |
| Antpitta, Tawny | Grallaria quitensis | Ungraded | |
| Antpitta, Undulated | Grallaria squamigera | Ungraded | |
| Antpitta, Urrao | Grallaria urraoensis | Ungraded | |
| Antpitta, Watkins's | Grallaria watkinsi | Ungraded | |
| Antpitta, White-bellied | Grallaria hypoleuca | Ungraded | |
| Antpitta, Yellow-breasted | Grallaria flavotincta | Ungraded | |
| Antshrike, Barred | Thamnophilus doliatus | Ungraded | |
| Antshrike, Black-crested | Sakesphorus canadensis | Ungraded | |
| Antshrike, Black-hooded | Thamnophilus bridgesi | Ungraded | |
| Antshrike, Bolivian Slaty- | Thamnophilus sticturus | Ungraded | |
| Antshrike, Chestnut-backed | Thamnophilus palliatus | Ungraded | |
| Antshrike, Collared | Sakesphorus bernardi | Ungraded | |
| Antshrike, Fasciated | Cymbilaimus lineatus | Ungraded | |
| Antshrike, Giant | Batara cinerea | Ungraded | |
| Antshrike, Great | Taraba major | Ungraded | |
| Antshrike, Large-tailed | Mackenziaena leachii | Ungraded | |
| Antshrike, Plain-winged | Thamnophilus schistaceus | Ungraded | |
| Antshrike, Planalto Slaty | Thamnophilus pelzelni | Ungraded | |
| Antshrike, Rufous-capped | Thamnophilus ruficapillus | Ungraded | |
| Antshrike, Western Slaty | Thamnophilus atrinucha | Ungraded | |
| Ant-thrush, Red-tailed | Neocossyphus rufus | Ungraded | |
| Antthrush, Rufous-capped | Formicarius colma | Ungraded | |
| Antvireo, Plain | Dysithamnus mentalis | Ungraded | |
| Antwren, Black-bellied | Formicivora melanogaster | Ungraded | |
| Antwren, Black-hooded | Formicivora erythronotos | Ungraded | |
| Antwren, Checker-throated | Epinecrophylla fulviventris | Ungraded | |
| Antwren, Dot-winged | Microrhopias quixensis | Ungraded | |
| Antwren, Guianan Streaked | Myrmotherula surinamensis | Ungraded | |
| Antwren, Large-billed | Herpsilochmus longirostris | Ungraded | |
| Antwren, Long-winged | Myrmotherula longipennis | Ungraded | |
| Antwren, Marsh | Stymphalornis acutirostris | Ungraded | |
| Antwren, Moustached | Myrmotherula ignota | Ungraded | |
| Antwren, Rufous-bellied | Isleria guttata | Ungraded | |
| Antwren, Rusty-backed | Formicivora rufa | Ungraded | |
| Antwren, Slaty | Myrmotherula schisticolor | Ungraded | |
| Antwren, White-fringed | Formicivora grisea | Ungraded | |
| Apalis, Bar-throated | Apalis thoracica | Ungraded | |
| Apalis, Black-capped | Apalis nigriceps | Ungraded | |
| Apalis, Black-collared | Oreolais pulcher | Ungraded | |
| Apalis, Gosling's | Apalis goslingi | Ungraded | |
| Apalis, Sharpe's | Apalis sharpii | Ungraded | |
| Apalis, Taita | Apalis fuscigularis | Ungraded | |
| Apalis, Yellow-breasted | Apalis flavida | Ungraded | |
| Apapane | Himatione sanguinea | Ungraded | |
| Apostlebird | Struthidea cinerea | Ungraded | |
| Aracari, Black-necked | Pteroglossus aracari | Ungraded | |
| Aracari, Chestnut-eared | Pteroglossus castanotis | Ungraded | |
| Aracari, Collared | Pteroglossus torquatus | Ungraded | |
| Aracari, Curl-crested | Pteroglossus beauharnaesii | Ungraded | |
| Aracari, Fiery-billed | Pteroglossus frantzii | Ungraded | |
| Aracari, Green | Pteroglossus viridis | Ungraded | |
| Aracari, Many-banded | Pteroglossus pluricinctus | Ungraded | |
| Aracari, Pale-mandibled | Pteroglossus erythropygius | Ungraded | |
| Aracari, Red-necked | Pteroglossus bitorquatus | Ungraded | |
| Asity, Velvet | Philepitta castanea | Ungraded | |
| Astrapia, Princess Stephanie's | Astrapia stephaniae | Ungraded | |
| Astrapia, Ribbon-tailed | Astrapia mayeri | Ungraded | |
| Attila, Bright-rumped | Attila spadiceus | Ungraded | |
| Attila, Cinnamon | Attila cinnamomeus | Ungraded | |
| Auk, Great | Pinguinus impennis | Ungraded | |
| Auk, Little | Alle alle | Local | |
| Auk, Little (ssp. polaris) | Alle alle polaris | Mega | |
| Auklet, Crested | Aethia cristatella | Ungraded | |
| Auklet, Least | Aethia pusilla | Ungraded | |
| Auklet, Parakeet | Cyclorrhynchus psittacula | Ungraded | |
| Auklet, Rhinoceros | Cerorhinca monocerata | Ungraded | |
| Avadavat, Red | Amandava amandava | Ungraded | |
| Avocet | Recurvirostra avosetta | Local | |
| Avocet, American | Recurvirostra americana | Ungraded | |
| Avocet, Andean | Recurvirostra andina | Ungraded | |
| Avocet, Red-necked | Recurvirostra novaehollandiae | Ungraded | |
| Avocetbill, Mountain | Opisthoprora euryptera | Ungraded | |
| Aythya hybrid | Aythya sp. | Local | |
| Babbler, Abbott's | Malacocincla abbotti | Ungraded | |
| Babbler, Arabian | Turdoides squamiceps | Ungraded | |
| Babbler, Arrow-marked | Turdoides jardineii | Ungraded | |
| Babbler, Bare-cheeked | Turdoides gymnogenys | Ungraded | |
| Babbler, Blackcap | Turdoides reinwardtii | Ungraded | |
| Babbler, Black-chinned | Stachyridopsis pyrrhops | Ungraded | |
| Babbler, Black-eared Shrike- | Pteruthius melanotis | Ungraded | |
| Babbler, Black-lored | Turdoides sharpei | Ungraded | |
| Babbler, Black-lored | Turdoides melanops | Ungraded | |
| Babbler, Black-necklaced Scimitar | Pomatorhinus erythrocnemis | Ungraded | |
| Babbler, Brown | Turdoides plebejus | Ungraded | |
| Babbler, Brown-capped | Pellorneum fuscocapillus | Ungraded | |
| Babbler, Chestnut-fronted Shrike- | Pteruthius aenobarbus | Ungraded | |
| Babbler, Common | Turdoides caudata | Ungraded | |
| Babbler, Dark-fronted | Rhopocichla atriceps | Ungraded | |
| Babbler, Dohrn's Thrush | Horizorhinus dohrni | Ungraded | |
| Babbler, Fulvous | Turdoides fulva | Ungraded | |
| Babbler, Golden | Stachyridopsis chrysaea | Ungraded | |
| Babbler, Grey-crowned | Pomatostomus temporalis | Ungraded | |
| Babbler, Hartlaub's | Turdoides hartlaubii | Ungraded | |
| Babbler, Horsfield's | Malacocincla sepiaria | Ungraded | |
| Babbler, Iraq | Turdoides altirostris | Ungraded | |
| Babbler, Jerdon's | Chrysomma altirostre | Ungraded | |
| Babbler, Jungle | Turdoides striata | Ungraded | |
| Babbler, Large Grey | Turdoides malcolmi | Ungraded | |
| Babbler, Large Wren- | Napothera macrodactyla | Ungraded | |
| Babbler, Long-billed Wren- | Rimator malacoptilus | Ungraded | |
| Babbler, Long-tailed Wren- | Spelaeornis chocolatinus | Ungraded | |
| Babbler, Orange-billed | Turdoides rufescens | Ungraded | |
| Babbler, Puff-throated | Pellorneum ruficeps | Ungraded | |
| Babbler, Pygmy Wren- | Pnoepyga pusilla | Ungraded | |
| Babbler, Rufous | Turdoides subrufa | Ungraded | |
| Babbler, Rufous-capped | Stachyridopsis ruficeps | Ungraded | |
| Babbler, Rufous-crowned | Malacopteron magnum | Ungraded | |
| Babbler, Short-tailed | Malacocincla malaccensis | Ungraded | |
| Babbler, Slender-billed Scimitar | Pomatorhinus superciliaris | Ungraded | |
| Babbler, Sri Lanka Scimitar | Pomatorhinus melanurus | Ungraded | |
| Babbler, Streak-breasted Scimitar | Pomatorhinus ruficollis | Ungraded | |
| Babbler, Taiwan Scimitar- | Pomatorhinus musicus | Ungraded | |
| Babbler, Tawny-bellied | Dumetia hyperythra | Ungraded | |
| Babbler, Wedge-billed Wren- | Sphenocichla humei | Ungraded | |
| Babbler, White-bibbed | Stachyris thoracica | Ungraded | |
| Babbler, White-breasted | Stachyris grammiceps | Ungraded | |
| Babbler, White-browed Scimitar | Pomatorhinus schisticeps | Ungraded | |
| Babbler, White-browed Shrike- | Pteruthius flaviscapis | Ungraded | |
| Babbler, White-headed | Turdoides leucocephala | Ungraded | |
| Babbler, White-rumped | Turdoides leucopygia | Ungraded | |
| Babbler, White-throated | Turdoides gularis | Ungraded | |
| Babbler, Yellow-billed | Turdoides affinis | Ungraded | |
| Babbler, Yellow-eyed | Chrysomma sinense | Ungraded | |
| Bananaquit | Coereba flaveola | Ungraded | |
| Barbet, Acacia Pied | Tricholaema leucomelas | Ungraded | |
| Barbet, Banded | Lybius undatus | Ungraded | |
| Barbet, Bearded | Lybius dubius | Ungraded | |
| Barbet, Black-backed | Lybius minor | Ungraded | |
| Barbet, Black-billed | Lybius guifsobalito | Ungraded | |
| Barbet, Black-browed | Megalaima oorti | Ungraded | |
| Barbet, Black-collared | Lybius torquatus | Ungraded | |
| Barbet, Black-throated | Tricholaema melanocephala | Ungraded | |
| Barbet, Blue-eared | Megalaima australis | Ungraded | |
| Barbet, Blue-throated | Megalaima asiatica | Ungraded | |
| Barbet, Bristle-nosed | Gymnobucco peli | Ungraded | |
| Barbet, Brown | Calorhamphus fuliginosus | Ungraded | |
| Barbet, Brown-breasted | Lybius melanopterus | Ungraded | |
| Barbet, Brown-headed | Megalaima zeylanica | Ungraded | |
| Barbet, Coppersmith | Megalaima haemacephala | Ungraded | |
| Barbet, Crested | Trachyphonus vaillantii | Ungraded | |
| Barbet, Crimson-fronted | Megalaima malabarica | Ungraded | |
| Barbet, D'Arnaud's | Trachyphonus darnaudii | Ungraded | |
| Barbet, Double-toothed | Lybius bidentatus | Ungraded | |
| Barbet, Gilded | Capito auratus | Ungraded | |
| Barbet, Golden-whiskered | Megalaima chrysopogon | Ungraded | |
| Barbet, Great | Megalaima virens | Ungraded | |
| Barbet, Green-eared | Megalaima faiostricta | Ungraded | |
| Barbet, Grey-throated | Gymnobucco bonapartei | Ungraded | |
| Barbet, Hairy-breasted | Tricholaema hirsuta | Ungraded | |
| Barbet, Lineated | Megalaima lineata | Ungraded | |
| Barbet, Moustached | Megalaima incognita | Ungraded | |
| Barbet, Naked-faced | Gymnobucco calvus | Ungraded | |
| Barbet, Prong-billed | Semnornis frantzii | Ungraded | |
| Barbet, Red-and-yellow | Trachyphonus erythrocephalus | Ungraded | |
| Barbet, Red-crowned | Megalaima rafflesii | Ungraded | |
| Barbet, Red-fronted | Tricholaema diademata | Ungraded | |
| Barbet, Red-headed | Eubucco bourcierii | Ungraded | |
| Barbet, Scarlet-banded | Capito wallacei | Ungraded | |
| Barbet, Spot-crowned | Capito maculicoronatus | Ungraded | |
| Barbet, Spot-flanked | Tricholaema lacrymosa | Ungraded | |
| Barbet, Taiwan | Megalaima nuchalis | Ungraded | |
| Barbet, Toucan | Semnornis ramphastinus | Ungraded | |
| Barbet, Vieillot's | Lybius vieilloti | Ungraded | |
| Barbet, White-cheeked | Megalaima viridis | Ungraded | |
| Barbet, White-eared | Stactolaema leucotis | Ungraded | |
| Barbet, White-headed | Lybius leucocephalus | Ungraded | |
| Barbet, Yellow-billed | Trachyphonus purpuratus | Ungraded | |
| Barbet, Yellow-breasted | Trachyphonus margaritatus | Ungraded | |
| Barbet, Yellow-fronted | Megalaima flavifrons | Ungraded | |
| Barbet, Yellow-spotted | Buccanodon duchaillui | Ungraded | |
| Barbtail, Spotted | Premnoplex brunnescens | Ungraded | |
| Barwing, Hoary-throated | Actinodura nipalensis | Ungraded | |
| Barwing, Rusty-fronted | Actinodura egertoni | Ungraded | |
| Barwing, Spectacled | Actinodura ramsayi | Ungraded | |
| Barwing, Taiwan | Actinodura morrisoniana | Ungraded | |
| Bateleur | Terathopius ecaudatus | Ungraded | |
| Batis, Angola | Batis minulla | Ungraded | |
| Batis, Black-headed | Batis minor | Ungraded | |
| Batis, Cape | Batis capensis | Ungraded | |
| Batis, Chinspot | Batis molitor | Ungraded | |
| Batis, Pririt | Batis pririt | Ungraded | |
| Batis, Senegal | Batis senegalensis | Ungraded | |
| Batis, Woodward's | Batis fratrum | Ungraded | |
| Baywing | Agelaioides badius | Ungraded | |
| Baza, Black | Aviceda leuphotes | Ungraded | |
| Baza, Jerdon's | Aviceda jerdoni | Ungraded | |
| Baza, Pacific | Aviceda subcristata | Ungraded | |
| Becard, Barred | Pachyramphus versicolor | Ungraded | |
| Becard, Black-and-white | Pachyramphus albogriseus | Ungraded | |
| Becard, Black-capped | Pachyramphus marginatus | Ungraded | |
| Becard, Cinereous | Pachyramphus rufus | Ungraded | |
| Becard, Cinnamon | Pachyramphus cinnamomeus | Ungraded | |
| Becard, Crested | Pachyramphus validus | Ungraded | |
| Becard, Green-backed | Pachyramphus viridis | Ungraded | |
| Becard, One-colored | Pachyramphus homochrous | Ungraded | |
| Becard, Rose-throated | Pachyramphus aglaiae | Ungraded | |
| Becard, White-winged | Pachyramphus polychopterus | Ungraded | |
| Bee-eater, Black | Merops gularis | Ungraded | |
| Bee-eater, Blue-bearded | Nyctyornis athertoni | Ungraded | |
| Bee-eater, Blue-breasted | Merops variegatus | Ungraded | |
| Bee-eater, Blue-cheeked | Merops persicus | Mega | |
| Bee-eater, Blue-headed | Merops muelleri | Ungraded | |
| Bee-eater, Blue-moustached | Merops mentalis | Ungraded | |
| Bee-eater, Blue-tailed | Merops philippinus | Ungraded | |
| Bee-eater, Blue-throated | Merops viridis | Ungraded | |
| Bee-eater, Boehm's | Merops boehmi | Ungraded | |
| Bee-eater, Chestnut-headed | Merops leschenaulti | Ungraded | |
| Bee-eater, Cinnamon-chested | Merops oreobates | Ungraded | |
| Bee-eater, European | Merops apiaster | Scarce | |
| Bee-eater, Little | Merops pusillus | Ungraded | |
| Bee-eater, Little Green | Merops orientalis | Ungraded | |
| Bee-eater, Madagascar | Merops superciliosus | Ungraded | |
| Bee-eater, Northern Carmine | Merops nubicus | Ungraded | |
| Bee-eater, Purple-bearded | Meropogon forsteni | Ungraded | |
| Bee-eater, Rainbow | Merops ornatus | Ungraded | |
| Bee-eater, Red-throated | Merops bulocki | Ungraded | |
| Bee-eater, Rosy | Merops malimbicus | Ungraded | |
| Bee-eater, Somali | Merops revoilii | Ungraded | |
| Bee-eater, Southern Carmine | Merops nubicoides | Ungraded | |
| Bee-eater, Swallow-tailed | Merops hirundineus | Ungraded | |
| Bee-eater, White-fronted | Merops bullockoides | Ungraded | |
| Bee-eater, White-throated | Merops albicollis | Ungraded | |
| Bee-eaters | Meropidae | Ungraded | |
| Bellbird | Anthornis melanura | Ungraded | |
| Bellbird, Bearded | Procnias averano | Ungraded | |
| Bellbird, Crested | Oreoica gutturalis | Ungraded | |
| Bellbird, Three-wattled | Procnias tricarunculata | Ungraded | |
| Bentbill, Southern | Oncostoma olivaceum | Ungraded | |
| Berrypecker, Crested | Paramythia montium | Ungraded | |
| Berrypecker, Spotted | Rhamphocharis crassirostris | Ungraded | |
| Besra | Accipiter virgatus | Ungraded | |
| Bird-of-paradise, Blue | Paradisaea rudolphi | Ungraded | |
| Bird-of-paradise, King | Cicinnurus regius | Ungraded | |
| Bird-of-Paradise, King-of-Saxony | Pteridophora alberti | Ungraded | |
| Bird-of-paradise, Magnificent | Diphyllodes magnificus | Ungraded | |
| Bird-of-paradise, Raggiana | Paradisaea raggiana | Ungraded | |
| Bird-of-paradise, Twelve-wired | Seleucidis melanoleuca | Ungraded | |
| Bishop, Black | Euplectes gierowii | Ungraded | |
| Bishop, Black-winged | Euplectes hordeaceus | Ungraded | |
| Bishop, Northern Red | Euplectes franciscanus | Ungraded | |
| Bishop, Red | Euplectes orix | Ungraded | |
| Bishop, Yellow | Euplectes capensis | Ungraded | |
| Bishop, Yellow-crowned | Euplectes afer | Ungraded | |
| Bishop, Zanzibar Red | Euplectes nigroventris | Ungraded | |
| Bittern | Botaurus stellaris | Local | |
| Bittern, American | Botaurus lentiginosus | Mega | |
| Bittern, Black | Ixobrychus flavicollis | Ungraded | |
| Bittern, Cinnamon | Ixobrychus cinnamomeus | Ungraded | |
| Bittern, Dwarf | Ixobrychus sturmii | Ungraded | |
| Bittern, Great/American | Botaurus stellaris/lentiginosus | Ungraded | |
| Bittern, Least | Ixobrychus exilis | Mega | |
| Bittern, Little | Ixobrychus minutus | Rare | |
| Bittern, Pinnated | Botaurus pinnatus | Ungraded | |
| Bittern, Schrenck's Little | Ixobrychus eurhythmus | Ungraded | |
| Bittern, Yellow | Ixobrychus sinensis | Ungraded | |
| Blackbird | Turdus merula | Common | |
| Blackbird, Austral | Curaeus curaeus | Ungraded | |
| Blackbird, Brewer's | Euphagus cyanocephalus | Ungraded | |
| Blackbird, Chestnut-capped | Chrysomus ruficapillus | Ungraded | |
| Blackbird, Chopi | Gnorimopsar chopi | Ungraded | |
| Blackbird, Cuban | Dives atroviolacea | Ungraded | |
| Blackbird, Grey-winged | Turdus boulboul | Ungraded | |
| Blackbird, Indian | Turdus simillimus | Ungraded | |
| Blackbird, Oriole | Gymnomystax mexicanus | Ungraded | |
| Blackbird, Red-breasted | Sturnella militaris | Ungraded | |
| Blackbird, Red-shouldered | Agelaius assimilis | Ungraded | |
| Blackbird, Red-winged | Agelaius phoeniceus | Ungraded | |
| Blackbird, Rusty | Euphagus carolinus | Ungraded | |
| Blackbird, Scarlet-headed | Amblyramphus holosericeus | Ungraded | |
| Blackbird, Tawny-shouldered | Agelaius humeralis | Ungraded | |
| Blackbird, Unicolored | Agelasticus cyanopus | Ungraded | |
| Blackbird, White-collared | Turdus albocinctus | Ungraded | |
| Blackbird, Yellow-headed | Xanthocephalus xanthocephalus | Ungraded | |
| Blackbird, Yellow-hooded | Agelaius icterocephalus | Ungraded | |
| Blackbird, Yellow-winged | Agelaius thilius | Ungraded | |
| Blackcap | Sylvia atricapilla | Common | |
| Blackcap, Bush | Lioptilus nigricapillus | Ungraded | |
| Black-cockatoo, Yellow-tailed | Calyptorhynchus funereus | Ungraded | |
| Blackstart | Oenanthe melanura | Ungraded | |
| Black-tyrant, Hudson's | Knipolegus hudsoni | Ungraded | |
| Bluebill, Grant's | Spermophaga poliogenys | Ungraded | |
| Bluebill, Western | Spermophaga haematina | Ungraded | |
| Bluebird, Eastern | Sialia sialis | Mega | |
| Bluebird, Mountain | Sialia currucoides | Ungraded | |
| Bluebird, Western | Sialia mexicana | Ungraded | |
| Bluetail, Himalayan | Tarsiger rufilatus | Ungraded | |
| Bluetail, Red-flanked | Tarsiger cyanurus | Rare | |
| Bluethroat | Luscinia svecica | Scarce | |
| Bluethroat, Red-spotted | Luscinia svecica svecica | Scarce | |
| Bluethroat, White-spotted | Luscinia svecica cyanecula | Scarce | |
| Blue-winged Teal x Shoveler | Anas discors x clypeata | Ungraded | |
| Boatbill, Yellow-breasted | Machaerirhynchus flaviventer | Ungraded | |
| Bobolink | Dolichonyx oryzivorus | Mega | |
| Bobwhite, Crested | Colinus cristatus | Ungraded | |
| Bobwhite, Northern | Colinus virginianus | Ungraded | |
| Bokmakierie | Telophorus zeylonus | Ungraded | |
| Boobook, Moluccan | Ninox squamipila | Ungraded | |
| Boobook, New Britain | Ninox odiosa | Ungraded | |
| Boobook, Southern | Ninox boobook | Ungraded | |
| Boobook, Speckled | Ninox punctulata | Ungraded | |
| Boobook, White-browed | Ninox superciliaris | Ungraded | |
| Booby sp. | Sula sp. | Ungraded | |
| Booby, Blue-footed | Sula nebouxii | Ungraded | |
| Booby, Brown | Sula leucogaster | Mega | |
| Booby, Masked | Sula dactylatra | Mega | |
| Booby, Nazca | Sula granti | Ungraded | |
| Booby, Red-footed | Sula sula | Ungraded | |
| Boubou, Gabon | Laniarius bicolor | Ungraded | |
| Boubou, Slate-colored | Laniarius funebris | Ungraded | |
| Boubou, Southern | Laniarius ferrugineus | Ungraded | |
| Boubou, Tropical | Laniarius major | Ungraded | |
| Boubou, Tropical | Laniarius aethiopicus | Ungraded | |
| Bowerbird, Golden | Prionodura newtoniana | Ungraded | |
| Bowerbird, Great | Chlamydera nuchalis | Ungraded | |
| Bowerbird, Regent | Sericulus chrysocephalus | Ungraded | |
| Bowerbird, Satin | Ptilonorhynchus violaceus | Ungraded | |
| Bowerbird, Tooth-billed | Scenopoeetes dentirostris | Ungraded | |
| Brambling | Fringilla montifringilla | Common | |
| Brant, Black | Branta bernicla nigricans | Scarce | |
| Brant, Grey-bellied | Branta bernicla hrota/nigricans | Rare | |
| Brilliant, Empress | Heliodoxa imperatrix | Ungraded | |
| Brilliant, Fawn-breasted | Heliodoxa rubinoides | Ungraded | |
| Brilliant, Green-crowned | Heliodoxa jacula | Ungraded | |
| Brilliant, Velvet-browed | Heliodoxa xanthogonys | Ungraded | |
| Brilliant, Violet-fronted | Heliodoxa leadbeateri | Ungraded | |
| Bristlebill, Grey-headed | Bleda canicapillus | Ungraded | |
| Bristlebird, Eastern | Dasyornis brachypterus | Ungraded | |
| Bristlebird, Rufous | Dasyornis broadbenti | Ungraded | |
| Bristlefront, Slaty | Merulaxis ater | Ungraded | |
| Broadbill, African | Smithornis capensis | Ungraded | |
| Broadbill, African Green | Pseudocalyptomena graueri | Ungraded | |
| Broadbill, Banded | Eurylaimus javanicus | Ungraded | |
| Broadbill, Black-and-red | Cymbirhynchus macrorhynchos | Ungraded | |
| Broadbill, Black-and-yellow | Eurylaimus ochromalus | Ungraded | |
| Broadbill, Dusky | Corydon sumatranus | Ungraded | |
| Broadbill, Rufous-sided | Smithornis rufolateralis | Ungraded | |
| Broadbill, Silver-breasted | Serilophus lunatus | Ungraded | |
| Bronzewing, Common | Phaps chalcoptera | Ungraded | |
| Brownbul, Terrestrial | Phyllastrephus terrestris | Ungraded | |
| Brubru | Nilaus afer | Ungraded | |
| Brushrunner, Lark-like | Coryphistera alaudina | Ungraded | |
| Budgerigar | Melopsittacus undulatus | Ungraded | |
| Buffalo-weaver, White-billed | Bubalornis albirostris | Ungraded | |
| Bufflehead | Bucephala albeola | Rare | |
| Bulbul sp. | Pycnonotidae | Ungraded | |
| Bulbul, Andaman | Pycnonotus fuscoflavescens | Ungraded | |
| Bulbul, Ashy | Hemixos flavala | Ungraded | |
| Bulbul, Asian Red-eyed | Pycnonotus brunneus | Ungraded | |
| Bulbul, Black | Hypsipetes leucocephalus | Ungraded | |
| Bulbul, Black-crested | Pycnonotus flaviventris | Ungraded | |
| Bulbul, Black-fronted | Pycnonotus nigricans | Ungraded | |
| Bulbul, Black-headed | Pycnonotus atriceps | Ungraded | |
| Bulbul, Brown-breasted | Pycnonotus xanthorrhous | Ungraded | |
| Bulbul, Brown-eared | Ixos amaurotis | Ungraded | |
| Bulbul, Buff-vented | Iole olivacea | Ungraded | |
| Bulbul, Chestnut | Hemixos castanonotus | Ungraded | |
| Bulbul, Common | Pycnonotus barbatus | Ungraded | |
| Bulbul, Dark-capped | Pycnonotus tricolor | Ungraded | |
| Bulbul, Dodson's | Pycnonotus barbatus dodsoni | Ungraded | |
| Bulbul, Flame-throated | Pycnonotus gularis | Ungraded | |
| Bulbul, Flavescent | Pycnonotus flavescens | Ungraded | |
| Bulbul, Grey-headed | Pycnonotus priocephalus | Ungraded | |
| Bulbul, Hairy-backed | Tricholestes criniger | Ungraded | |
| Bulbul, Light-vented | Pycnonotus sinensis | Ungraded | |
| Bulbul, Malagasy | Hypsipetes madagascariensis | Ungraded | |
| Bulbul, Mauritius | Hypsipetes Olivaceus | Ungraded | |
| Bulbul, Mountain | Ixos mcclellandii | Ungraded | |
| Bulbul, Ochraceous | Alophoixus ochraceus | Ungraded | |
| Bulbul, Olive-winged | Pycnonotus plumosus | Ungraded | |
| Bulbul, Red-vented | Pycnonotus cafer | Ungraded | |
| Bulbul, Red-whiskered | Pycnonotus jocosus | Ungraded | |
| Bulbul, Seychelles | Hypsipetes crassirostris | Ungraded | |
| Bulbul, Sooty-headed | Pycnonotus aurigaster | Ungraded | |
| Bulbul, Spectacled | Pycnonotus erythropthalmos | Ungraded | |
| Bulbul, Straw-headed | Pycnonotus zeylanicus | Ungraded | |
| Bulbul, Streak-eared | Pycnonotus blanfordi | Ungraded | |
| Bulbul, Striated | Pycnonotus striatus | Ungraded | |
| Bulbul, Stripe-throated | Pycnonotus finlaysoni | Ungraded | |
| Bulbul, Styan's | Pycnonotus taivanus | Ungraded | |
| Bulbul, White-browed | Pycnonotus luteolus | Ungraded | |
| Bulbul, White-cheeked | Pycnonotus leucogenys | Ungraded | |
| Bulbul, White-eared | Pycnonotus leucotis | Ungraded | |
| Bulbul, White-spectacled | Pycnonotus xanthopygos | Ungraded | |
| Bulbul, White-throated | Criniger flaveolus | Ungraded | |
| Bulbul, Yellow-browed | Acritillas indica | Ungraded | |
| Bulbul, Yellow-eared | Pycnonotus penicillatus | Ungraded | |
| Bulbul, Yellow-vented | Pycnonotus goiavier | Ungraded | |
| Bullfinch | Pyrrhula pyrrhula | Common | |
| Bullfinch (British) | Pyrrhula pyrrhula pileata | Common | |
| Bullfinch, Azores | Pyrrhula murina | Ungraded | |
| Bullfinch, Barbados | Loxigilla barbadensi | Ungraded | |
| Bullfinch, Brown | Pyrrhula nipalensis | Ungraded | |
| Bullfinch, Cuban | Melopyrrha nigra | Ungraded | |
| Bullfinch, Greater Antillean | Loxigilla violacea | Ungraded | |
| Bullfinch, Grey-headed | Pyrrhula erythaca | Ungraded | |
| Bullfinch, Lesser Antillean | Loxigilla noctis | Ungraded | |
| Bullfinch, Northern | Pyrrhula pyrrhula pyrrhula | Local | |
| Bullfinch, Puerto Rican | Loxigilla portoricensis | Ungraded | |
| Bullfinch, Red-headed | Pyrrhula erythrocephala | Ungraded | |
| Bunting sp. | Emberiza | Scarce | |
| Bunting, Black-faced | Emberiza spodocephala | Mega | |
| Bunting, Black-headed | Emberiza melanocephala | Rare | |
| Bunting, Brown-rumped | Emberiza affinis | Ungraded | |
| Bunting, Cape | Emberiza capensis | Ungraded | |
| Bunting, Chestnut | Emberiza rutila | Mega | |
| Bunting, Chestnut-eared | Emberiza fucata | Mega | |
| Bunting, Cinereous | Emberiza cineracea | Mega | |
| Bunting, Cinnamon-breasted Rock | Emberiza tahapisi | Ungraded | |
| Bunting, Cirl | Emberiza cirlus | Local | |
| Bunting, Corn | Emberiza calandra | Common | |
| Bunting, Crested | Emberiza lathami | Ungraded | |
| Bunting, Cretzschmar's | Emberiza caesia | Mega | |
| Bunting, Godlewski's | Emberiza godlewskii | Ungraded | |
| Bunting, Golden-breasted | Emberiza flaviventris | Ungraded | |
| Bunting, Grey | Emberiza variabilis | Ungraded | |
| Bunting, Grey-necked | Emberiza buchanani | Mega | |
| Bunting, House | Emberiza sahari | Ungraded | |
| Bunting, Indigo | Passerina cyanea | Mega | |
| Bunting, Japanese Reed | Emberiza yessoensis | Ungraded | |
| Bunting, Lapland | Calcarius lapponicus | Local | |
| Bunting, Lark | Calamospiza melanocorys | Ungraded | |
| Bunting, Lark-like | Emberiza impetuani | Ungraded | |
| Bunting, Lazuli | Passerina amoena | Ungraded | |
| Bunting, Little | Emberiza pusilla | Scarce | |
| Bunting, McKay's | Plectrophenax hyperboreus | Ungraded | |
| Bunting, Ortolan | Emberiza hortulana | Scarce | |
| Bunting, Painted | Passerina ciris | Ungraded | |
| Bunting, Pallas's Reed | Emberiza pallasi | Mega | |
| Bunting, Pine | Emberiza leucocephalos | Mega | |
| Bunting, Red-headed | Emberiza bruniceps | Ungraded | |
| Bunting, Red-headed/Black-headed | Emberiza bruniceps/melanocephala | Rare | |
| Bunting, Reed | Emberiza schoeniclus | Common | |
| Bunting, Rock | Emberiza cia | Mega | |
| Bunting, Rustic | Emberiza rustica | Rare | |
| Bunting, Siberian Meadow | Emberiza cioides | Ungraded | |
| Bunting, Snow | Plectrophenax nivalis | Local | |
| Bunting, Striolated | Emberiza striolata | Ungraded | |
| Bunting, Tristram's | Emberiza tristrami | Ungraded | |
| Bunting, Varied | Passerina versicolor | Ungraded | |
| Bunting, White-capped | Emberiza stewarti | Ungraded | |
| Bunting, Yellow | Emberiza sulphurata | Ungraded | |
| Bunting, Yellow-breasted | Emberiza aureola | Mega | |
| Bunting, Yellow-browed | Emberiza chrysophrys | Mega | |
| Bunting, Yellow-throated | Emberiza elegans | Ungraded | |
| Bushchat, Pied | Saxicola caprata | Ungraded | |
| Bushchat, White-browed | Saxicola macrorhynchus | Ungraded | |
| Bushchat, White-throated | Saxicola insignis | Ungraded | |
| Bushlark, Burmese | Mirafra microptera | Ungraded | |
| Bushlark, Indian | Mirafra erythroptera | Ungraded | |
| Bushlark, Indochinese | Mirafra erythrocephala | Ungraded | |
| Bushlark, Kordofan | Mirafra cordofanica | Ungraded | |
| Bushlark, Rufous-winged | Mirafra assamica | Ungraded | |
| Bushlark, Singing | Mirafra cantillans | Ungraded | |
| Bush-quail, Rock | Perdicula argoondah | Ungraded | |
| Bushshrike, Gorgeous | Telophorus viridis | Ungraded | |
| Bushshrike, Grey-headed | Malaconotus blanchoti | Ungraded | |
| Bushshrike, Orange-breasted | Chlorophoneus sulfureopectus | Ungraded | |
| Bushshrike, Rosy-patched | Telophorus cruentus | Ungraded | |
| Bushtit | Psaltriparus minimus | Ungraded | |
| Bush-tyrant, Red-rumped | Cnemarchus erythropygius | Ungraded | |
| Bush-Tyrant, Smoky | Myiotheretes fumigatus | Ungraded | |
| Bustard Hautlaub's | Eupodotis hartlaubi | Ungraded | |
| Bustard, Arabian | Ardeotis arabs | Ungraded | |
| Bustard, Australian | Ardeotis australis | Ungraded | |
| Bustard, Black-bellied | Eupodotis melanogaster | Ungraded | |
| Bustard, Buff-crested | Eupodotis gindiana | Ungraded | |
| Bustard, Denham's | Neotis denhami | Ungraded | |
| Bustard, Great | Otis tarda | Scarce | |
| Bustard, Heuglin's | Neotis heuglinii | Ungraded | |
| Bustard, Houbara | Chlamydotis undulata | Mega | |
| Bustard, Indian | Ardeotis nigriceps | Ungraded | |
| Bustard, Kori | Ardeotis kori | Ungraded | |
| Bustard, Little | Tetrax tetrax | Mega | |
| Bustard, Ludwig's | Neotis ludwigii | Ungraded | |
| Bustard, Macqueen's | Chlamydotis macqueenii | Mega | |
| Bustard, Nubian | Neotis nuba | Ungraded | |
| Bustard, Savile's | Lophotis savilei | Ungraded | |
| Bustard, White-bellied | Eupodotis senegalensis | Ungraded | |
| Butcherbird, Black | Cracticus quoyi | Ungraded | |
| Butcherbird, Black-backed | Cracticus mentalis | Ungraded | |
| Butcherbird, Grey | Cracticus torquatus | Ungraded | |
| Butcherbird, Pied | Cracticus nigrogularis | Ungraded | |
| Buttonquail, Barred | Turnix suscitator | Ungraded | |
| Buttonquail, Black-breasted | Turnix melanogaster | Ungraded | |
| Buttonquail, Madagascar | Turnix nigricollis | Ungraded | |
| Buzzard, Augur | Buteo augur | Ungraded | |
| Buzzard, Black-breasted | Hamirostra melanosternon | Ungraded | |
| Buzzard, Common | Buteo buteo | Common | |
| Buzzard, Eastern | Buteo japonicus | Ungraded | |
| Buzzard, European Honey x Oriental Honey | Pernis apivorus x ptilorhynchus | Ungraded | |
| Buzzard, Forest | Buteo trizonatus | Ungraded | |
| Buzzard, Grasshopper | Butastur rufipennis | Ungraded | |
| Buzzard, Grey-faced | Butastur indicus | Ungraded | |
| Buzzard, Honey | Pernis apivorus | Scarce | |
| Buzzard, Jackal | Buteo rufofuscus | Ungraded | |
| Buzzard, Lizard | Kaupifalco monogrammicus | Ungraded | |
| Buzzard, Long-legged | Buteo rufinus | Mega | |
| Buzzard, Madagascar | Buteo brachypterus | Ungraded | |
| Buzzard, Mountain | Buteo oreophilus | Ungraded | |
| Buzzard, Oriental Honey | Pernis ptilorhynchus | Ungraded | |
| Buzzard, Rough-legged | Buteo lagopus | Scarce | |
| Buzzard, Steppe | Buteo buteo vulpinus | Mega | |
| Buzzard, Upland | Buteo hemilasius | Ungraded | |
| Buzzard, White-eyed | Butastur teesa | Ungraded | |
| Cacholote, Grey-crested | Pseudoseisura unirufa | Ungraded | |
| Cacique, Golden-winged | Cacicus chrysopterus | Ungraded | |
| Cacique, Red-rumped | Cacicus haemorrhous | Ungraded | |
| Cacique, Scarlet-rumped | Cacicus microrhynchus | Ungraded | |
| Cacique, Yellow-billed | Amblycercus holosericeus | Ungraded | |
| Cacique, Yellow-rumped | Cacicus cela | Ungraded | |
| Calidris sp. | Calidris | Rare | |
| Camaroptera, Green-backed | Camaroptera brachyura | Ungraded | |
| Camaroptera, Grey-backed | Camaroptera brevicaudata | Ungraded | |
| Camaroptera, Yellow-browed | Camaroptera superciliaris | Ungraded | |
| Canary | Serinus canaria | Ungraded | |
| Canary, Black-throated | Crithagra atrogularis | Ungraded | |
| Canary, Brimstone | Serinus sulphuratus | Ungraded | |
| Canary, Cape | Serinus canicollis | Ungraded | |
| Canary, Protea | Crithagra leucoptera | Ungraded | |
| Canary, White-bellied | Serinus dorsostriatus | Ungraded | |
| Canary, White-throated | Serinus albogularis | Ungraded | |
| Canary, Yellow | Crithagra flaviventris | Ungraded | |
| Canary, Yellow-fronted | Crithagra mozambica | Ungraded | |
| Canary-flycatcher, Grey-headed | Culicicapa ceylonensis | Ungraded | |
| Canastero, Austral | Asthenes anthoides | Ungraded | |
| Canastero, Berlepsch's | Pseudasthenes berlepschi | Ungraded | |
| Canastero, Cordilleran | Asthenes modesta | Ungraded | |
| Canastero, Hudson's | Asthenes hudsoni | Ungraded | |
| Canastero, Many-striped | Asthenes flammulata | Ungraded | |
| Canvasback | Aythya valisineria | Mega | |
| Capercaillie | Tetrao urogallus | Local | |
| Capuchinbird | Perissocephalus tricolor | Ungraded | |
| Caracara, Black | Daptrius ater | Ungraded | |
| Caracara, Carunculated | Phalcoboenus carunculatus | Ungraded | |
| Caracara, Chimango | Milvago chimango | Ungraded | |
| Caracara, Crested | Polyborus plancus | Ungraded | |
| Caracara, Mountain | Phalcoboenus megalopterus | Ungraded | |
| Caracara, Red-throated | Ibycter americanus | Ungraded | |
| Caracara, Southern | Caracara plancus | Ungraded | |
| Caracara, Striated | Phalcoboenus australis | Ungraded | |
| Caracara, Yellow-headed | Milvago chimachima | Ungraded | |
| Cardinal, Northern | Cardinalis cardinalis | Mega | |
| Cardinal, Red-capped | Paroaria gularis | Ungraded | |
| Cardinal, Red-cowled | Paroaria dominicana | Ungraded | |
| Cardinal, Red-crested | Paroaria coronata | Ungraded | |
| Cardinal, Vermilion | Cardinalis phoeniceus | Ungraded | |
| Cardinal, Yellow | Gubernatrix cristata | Ungraded | |
| Cardinal, Yellow-billed | Paroaria capitata | Ungraded | |
| Carib, Green-throated | Eulampis holosericeus | Ungraded | |
| Carib, Purple-throated | Eulampis jugularis | Ungraded | |
| Cassowary, Southern | Casuarius casuarius | Ungraded | |
| Catbird, Grey | Dumetella carolinensis | Mega | |
| Catbird, Spotted | Ailuroedus maculosus | Ungraded | |
| Chachalaca, Chaco | Ortalis canicollis | Ungraded | |
| Chachalaca, Chestnut-winged | Ortalis garrula | Ungraded | |
| Chachalaca, Colombian | Ortalis columbiana | Ungraded | |
| Chachalaca, Grey-headed | Ortalis cinereiceps | Ungraded | |
| Chachalaca, Little | Ortalis motmot | Ungraded | |
| Chachalaca, Plain | Ortalis vetula | Ungraded | |
| Chachalaca, Rufous-bellied | Ortalis wagleri | Ungraded | |
| Chachalaca, Rufous-vented | Ortalis ruficauda | Ungraded | |
| Chachalaca, Speckled | Ortalis guttata | Ungraded | |
| Chaffinch | Fringilla coelebs | Common | |
| Chaffinch, African | Fringilla coelebs africana | Ungraded | |
| Chaffinch, Blue | Fringilla teydea | Ungraded | |
| chat sp. | Saxicola sp. | Ungraded | |
| Chat, Ant | Myrmecocichla aethiops | Ungraded | |
| Chat, Brown Rock | Oenanthe fusca | Ungraded | |
| Chat, Brown-tailed Rock | Oenanthe scotocerca | Ungraded | |
| Chat, Buff-streaked | Campicoloides bifasciatus | Ungraded | |
| Chat, Cape Robin- | Cossypha caffra | Ungraded | |
| Chat, Congo Moor- | Myrmecocichla tholloni | Ungraded | |
| Chat, Familiar | Oenanthe familiaris | Ungraded | |
| Chat, Grey Bush- | Saxicola ferreus | Ungraded | |
| Chat, Jerdon's Bush- | Saxicola jerdoni | Ungraded | |
| Chat, Karoo | Emarginata schlegelii | Ungraded | |
| Chat, Mocking Cliff | Thamnolaea cinnamomeiventris | Ungraded | |
| Chat, Moorland | Cercomela sordida | Ungraded | |
| Chat, Red-capped Robin- | Cossypha natalensis | Ungraded | |
| Chat, Rüppell's Robin- | Cossypha semirufa | Ungraded | |
| Chat, Sickle-winged | Emarginata sinuata | Ungraded | |
| Chat, Snowy-crowned Robin- | Cossypha niveicapilla | Ungraded | |
| Chat, Sooty | Myrmecocichla nigra | Ungraded | |
| Chat, Southern Anteater- | Myrmecocichla formicivora | Ungraded | |
| Chat, Tractrac | Emarginata tractrac | Ungraded | |
| Chat, White Fronted Black | Myrmecocichla albifrons | Ungraded | |
| Chat, White-browed Robin- | Cossypha heuglini | Ungraded | |
| Chat, White-crowned Cliff | Thamnolaea coronata | Ungraded | |
| Chat, White-crowned Robin- | Cossypha albicapillus | Ungraded | |
| Chat, White-fronted | Epthianura albifrons | Ungraded | |
| Chat, White-winged Cliff | Monticola semirufus | Ungraded | |
| Chat, Yellow-breasted | Icteria virens | Ungraded | |
| Chatterer, Rufous | Turdoides rubiginosus | Ungraded | |
| Chat-Tyrant, Brown-backed | Ochthoeca fumicolor | Ungraded | |
| Chat-Tyrant, Rufous-breasted | Ochthoeca rufipectoralis | Ungraded | |
| Chat-Tyrant, Slaty-backed | Ochthoeca cinnamomeiventris | Ungraded | |
| Chickadee, Black-capped | Poecile atricapillus | Ungraded | |
| Chickadee, Boreal | Poecile hudsonicus | Ungraded | |
| Chickadee, Carolina | Poecile carolinensis | Ungraded | |
| Chickadee, Mexican | Poecile sclateri | Ungraded | |
| Chickadee, Mountain | Poecile gambeli | Ungraded | |
| Chiffchaff | Phylloscopus collybita | Common | |
| Chiffchaff, Canary Islands | Phylloscopus canariensis | Ungraded | |
| Chiffchaff, Caucasian | Phylloscopus (collybita) lorenzii | Ungraded | |
| Chiffchaff, Iberian | Phylloscopus ibericus | Rare | |
| Chiffchaff, Mountain | Phylloscopus sindianus | Mega | |
| Chiffchaff, Siberian | Phylloscopus collybita tristis | Scarce | |
| Chlorophonia, Blue-naped | Chlorophonia cyanea | Ungraded | |
| Chlorophonia, Chestnut-breasted | Chlorophonia pyrrhophrys | Ungraded | |
| Chough | Pyrrhocorax pyrrhocorax | Local | |
| Chough, Alpine | Pyrrhocorax graculus | Ungraded | |
| Chough, White-winged | Corcorax melanoramphos | Ungraded | |
| Chuck-will's-widow | Antrostomus carolinensis | Ungraded | |
| Chukar | Alectoris chukar | Ungraded | |
| Cinclodes, Bar-winged | Cinclodes fuscus | Ungraded | |
| Cinclodes, Blackish | Cinclodes antarcticus | Ungraded | |
| Cinclodes, Chestnut-winged | Cinclodes albidiventris | Ungraded | |
| Cinclodes, Dark-bellied | Cinclodes patagonicus | Ungraded | |
| Cinclodes, Grey-flanked | Cinclodes oustaleti | Ungraded | |
| Cinclodes, Stout-billed | Cinclodes excelsior | Ungraded | |
| Cinclodes, Surf | Cinclodes taczanowskii | Ungraded | |
| Cinclodes, White-bellied | Cinclodes palliatus | Ungraded | |
| Cisticola, Ashy | Cisticola cinereolus | Ungraded | |
| Cisticola, Black-backed | Cisticola eximius | Ungraded | |
| Cisticola, Chubb's | Cisticola chubbi | Ungraded | |
| Cisticola, Croaking | Cisticola natalensis | Ungraded | |
| Cisticola, Foxy | Cisticola troglodytes | Ungraded | |
| Cisticola, Golden-headed | Cisticola exilis | Ungraded | |
| Cisticola, Grey-backed | Cisticola subruficapilla | Ungraded | |
| Cisticola, Hunter's | Cisticola hunteri | Ungraded | |
| Cisticola, Lazy | Cisticola aberrans | Ungraded | |
| Cisticola, Madagascar | Cisticola cherina | Ungraded | |
| Cisticola, Rattling | Cisticola chiniana | Ungraded | |
| Cisticola, Red-faced | Cisticola erythrops | Ungraded | |
| Cisticola, Siffling | Cisticola brachypterus | Ungraded | |
| Cisticola, Singing | Cisticola cantans | Ungraded | |
| Cisticola, Stout | Cisticola robustus | Ungraded | |
| Cisticola, Tinkling | Cisticola tinniens | Ungraded | |
| Cisticola, Trilling | Cisticola woosnami | Ungraded | |
| Cisticola, Whistling | Cisticola lateralis | Ungraded | |
| Cisticola, Winding | Cisticola marginatus | Ungraded | |
| Cisticola, Winding | Cisticola galactotes | Ungraded | |
| Cisticola, Zitting | Cisticola juncidis | Mega | |
| Cisticolas and allies | Cisticolidae | Ungraded | |
| Citril, African | Serinus citrinelloides | Ungraded | |
| Cockatiel | Nymphicus hollandicus | Ungraded | |
| Cockatoo, Gang-gang | Callocephalon fimbriatum | Ungraded | |
| Cockatoo, Glossy Black- | Calyptorhynchus lathami | Ungraded | |
| Cockatoo, Long-billed Black | Calyptorhynchus baudinii | Ungraded | |
| Cockatoo, Major Mitchell's | Lophochroa leadbeateri | Ungraded | |
| Cockatoo, Red-tailed Black- | Calyptorhynchus banksii | Ungraded | |
| Cockatoo, Short-billed | Calyptorhynchus latirostris | Ungraded | |
| Cockatoo, Sulphur-crested | Cacatua galerita | Ungraded | |
| Cockatoo, Tanimbar | Cacatua goffini | Ungraded | |
| Cock-of-the-rock, Andean | Rupicola peruvianus saturatus | Ungraded | |
| Cock-of-the-rock, Guianan | Rupicola rupicola | Ungraded | |
| Condor, Andean | Vultur gryphus | Ungraded | |
| Condor, Californian | Gymnogyps californianus | Ungraded | |
| Conebill, Bicolored | Conirostrum bicolor | Ungraded | |
| Conebill, Blue-backed | Conirostrum sitticolor | Ungraded | |
| Conebill, Cinerous | Conirostrum cinereum | Ungraded | |
| Conebill, Giant | Oreomanes fraseri | Ungraded | |
| Coot | Fulica atra | Common | |
| Coot, American | Fulica americana | Mega | |
| Coot, Caribbean | Fulica caribaea | Ungraded | |
| Coot, Giant | Fulica gigantea | Ungraded | |
| Coot, Hawaiian | Fulica alai | Ungraded | |
| Coot, Red-fronted | Fulica rufifrons | Ungraded | |
| Coot, Red-gartered | Fulica armillata | Ungraded | |
| Coot, Red-knobbed | Fulica cristata | Mega | |
| Coot, Slate-colored | Fulica ardesiaca | Ungraded | |
| Coot, White-winged | Fulica leucoptera | Ungraded | |
| Coquette, Black-crested | Lophornis helenae | Ungraded | |
| Coquette, Festive | Lophornis chalybeus | Ungraded | |
| Coquette, Frilled | Lophornis magnificus | Ungraded | |
| Coquette, Rufous-crested | Lophornis delattrei | Ungraded | |
| Coquette, Tufted | Lophornis ornatus | Ungraded | |
| Cordon-bleu, Blue-breasted | Uraeginthus angolensis | Ungraded | |
| Cordon-bleu, Blue-capped | Uraeginthus cyanocephalus | Ungraded | |
| Cordon-bleu, Red-cheeked | Uraeginthus bengalus | Ungraded | |
| Corella, Little | Cacatua sanguinea | Ungraded | |
| Corella, Long-billed | Cacatua tenuirostris | Ungraded | |
| Corella, Western | Cacatua pastinator | Ungraded | |
| Cormorant | Phalacrocorax carbo | Common | |
| Cormorant (ssp. sinensis) | Phalacrocorax carbo sinensis | Local | |
| Cormorant sp. | Phalacrocorax | Rare | |
| Cormorant, Black-faced | Phalacrocorax fuscescens | Ungraded | |
| Cormorant, Brandt's | Phalacrocorax penicillatus | Ungraded | |
| Cormorant, Cape | Phalacrocorax capensis | Ungraded | |
| Cormorant, Double-crested | Phalacrocorax auritus | Mega | |
| Cormorant, Flightless | Nannopterum harrisi | Ungraded | |
| Cormorant, Indian | Phalacrocorax fuscicollis | Ungraded | |
| Cormorant, Little | Microcarbo niger | Ungraded | |
| Cormorant, Little Black | Phalacrocorax sulcirostris | Ungraded | |
| Cormorant, Little Pied | Microcarbo melanoleucos | Ungraded | |
| Cormorant, Neotropic | Phalacrocorax brasilianus | Ungraded | |
| Cormorant, Pelagic | Phalacrocorax pelagicus | Ungraded | |
| Cormorant, Pied | Phalacrocorax varius | Ungraded | |
| Cormorant, Pygmy | Microcarbo pygmeus | Mega | |
| Cormorant, Red-faced | Phalacrocorax urile | Ungraded | |
| Cormorant, Reed | Microcarbo africanus | Ungraded | |
| Cormorant, Socotra | Phalacrocorax nigrogularis | Ungraded | |
| Cormorant, White-breasted | Phalacrocorax lucidus | Ungraded | |
| Cormorants | Phalacrocoracidae | Ungraded | |
| Corncrake | Crex crex | Scarce | |
| Coronet, Buff-tailed | Boissonneaua flavescens | Ungraded | |
| Coronet, Chestnut-breasted | Boissonneaua matthewsii | Ungraded | |
| Coronet, Velvet-purple | Boissonneaua jardini | Ungraded | |
| Cotinga, Banded | Cotinga maculata | Ungraded | |
| Cotinga, Bay-vented | Doliornis sclateri | Ungraded | |
| Cotinga, Black-and-gold | Tijuca atra | Ungraded | |
| Cotinga, Blue | Cotinga nattererii | Ungraded | |
| Cotinga, Grey-winged | Tijuca condita | Ungraded | |
| Cotinga, Pompadour | Xipholena punicea | Ungraded | |
| Cotinga, Red-crested | Ampelion rubrocristatus | Ungraded | |
| Cotinga, Snowy | Carpodectes nitidus | Ungraded | |
| Cotinga, Spangled | Cotinga cayana | Ungraded | |
| Cotinga, Swallow-tailed | Phibalura flavirostris | Ungraded | |
| Cotinga, Yellow-billed | Carpodectes antoniae | Ungraded | |
| Coua, Blue | Coua caerulea | Ungraded | |
| Coua, Coquerel's | Coua coquereli | Ungraded | |
| Coua, Crested | Coua cristata | Ungraded | |
| Coua, Giant | Coua gigas | Ungraded | |
| Coua, Red-breasted | Coua serriana | Ungraded | |
| Coua, Red-capped | Coua ruficeps | Ungraded | |
| Coua, Red-fronted | Coua reynaudii | Ungraded | |
| Coua, Running | Coua cursor | Ungraded | |
| Coua, Verreaux's | Coua verreauxi | Ungraded | |
| Coucal, Andaman | Centropus andamanensis | Ungraded | |
| Coucal, Black | Centropus grillii | Ungraded | |
| Coucal, Black-billed | Centropus bernsteini | Ungraded | |
| Coucal, Blue-headed | Centropus monachus | Ungraded | |
| Coucal, Burchell's | Centropus burchellii | Ungraded | |
| Coucal, Greater | Centropus sinensis | Ungraded | |
| Coucal, Green-billed | Centropus chlororhynchos | Ungraded | |
| Coucal, Ivory-billed | Centropus menbeki | Ungraded | |
| Coucal, Lesser | Centropus bengalensis | Ungraded | |
| Coucal, Madagascar | Centropus toulou | Ungraded | |
| Coucal, Pheasant | Centropus phasianinus | Ungraded | |
| Coucal, Senegal | Centropus senegalensis | Ungraded | |
| Coucal, White-browed | Centropus superciliosus | Ungraded | |
| Courser, Bronze-winged | Rhinoptilus chalcopterus | Ungraded | |
| Courser, Burchell's | Cursorius rufus | Ungraded | |
| Courser, Cream-coloured | Cursorius cursor | Mega | |
| Courser, Double-banded | Rhinoptilus africanus | Ungraded | |
| Courser, Indian | Cursorius coromandelicus | Ungraded | |
| Courser, Temminck's | Cursorius temminckii | Ungraded | |
| Courser, Three-banded | Rhinoptilus cinctus | Ungraded | |
| Cowbird, Bronzed | Molothrus aeneus | Ungraded | |
| Cowbird, Brown-headed | Molothrus ater | Mega | |
| Cowbird, Giant | Molothrus oryzivora | Ungraded | |
| Cowbird, Screaming | Molothrus rufoaxillaris | Ungraded | |
| Cowbird, Shiny | Molothrus bonariensis | Ungraded | |
| Crake sp. | Porzana | Rare | |
| Crake, African | Crex egregia | Ungraded | |
| Crake, Australian Spotted | Porzana fluminea | Ungraded | |
| Crake, Baillon's | Porzana pusilla | Mega | |
| Crake, Baillon's/Little | Porzana pusilla/parva | Ungraded | |
| Crake, Banded | Rallina eurizonoides | Ungraded | |
| Crake, Black | Amaurornis flavirostra | Ungraded | |
| Crake, Little | Porzana parva | Rare | |
| Crake, Paint-billed | Neocrex erythrops | Ungraded | |
| Crake, Ruddy | Laterallus ruber | Ungraded | |
| Crake, Ruddy-breasted | Porzana fusca | Ungraded | |
| Crake, Rufous-sided | Laterallus leucopyrrhus | Ungraded | |
| Crake, Spotless | Porzana tabuensis | Ungraded | |
| Crake, Spotted | Porzana porzana | Scarce | |
| Crake, Striped | Aenigmatolimnas marginalis | Ungraded | |
| Crake, White-browed | Porzana cinerea | Ungraded | |
| Crake, White-throated | Laterallus albigularis | Ungraded | |
| Crane sp. | Gruidae | Scarce | |
| Crane, Black Crowned | Balearica pavonina | Ungraded | |
| Crane, Black-necked | Grus nigricollis | Ungraded | |
| Crane, Blue | Grus paradisea | Ungraded | |
| Crane, Common | Grus grus | Scarce | |
| Crane, Demoiselle | Grus virgo | Ungraded | |
| Crane, Grey Crowned | Balearica regulorum | Ungraded | |
| Crane, Hooded | Grus monacha | Ungraded | |
| Crane, Red-crowned | Grus japonensis | Ungraded | |
| Crane, Sandhill | Grus canadensis | Mega | |
| Crane, Sarus | Grus antigone | Ungraded | |
| Crane, Siberian White | Grus leucogeranus | Ungraded | |
| Crane, Wattled | Grus carunculata | Ungraded | |
| Crane, White-naped | Grus vipio | Ungraded | |
| Crane, Whooping | Grus americana | Ungraded | |
| Creeper, Brown | Certhia americana | Ungraded | |
| Creeper, Spotted | Salpornis spilonotus | Ungraded | |
| Crescentchest, Collared | Melanopareia torquata | Ungraded | |
| Crescentchest, Elegant | Melanopareia elegans | Ungraded | |
| Crescentchest, Maranon | Melanopareia maranonica | Ungraded | |
| Crombec, Green | Sylvietta virens | Ungraded | |
| Crombec, Lemon-bellied | Sylvietta denti | Ungraded | |
| Crombec, Northern | Sylvietta brachyura | Ungraded | |
| Crombec, Red-faced | Sylvietta whytii | Ungraded | |
| Crossbill sp. | Loxia | Scarce | |
| Crossbill, Common | Loxia curvirostra | Common | |
| Crossbill, Parrot | Loxia pytyopsittacus | Rare | |
| Crossbill, Scottish | Loxia scotica | Local | |
| Crossbill, Two-barred | Loxia leucoptera | Rare | |
| Crow, American | Corvus brachyrhynchos | Ungraded | |
| Crow, Cape | Corvus capensis | Ungraded | |
| Crow, Carrion | Corvus corone | Common | |
| Crow, Carrion x Hooded | Corvus corone x cornix | Common | |
| Crow, Fish | Corvus ossifragus | Ungraded | |
| Crow, Hooded | Corvus cornix | Local | |
| Crow, House | Corvus splendens | Rare | |
| Crow, Indian Jungle | Corvus culminatus | Ungraded | |
| Crow, Large-billed | Corvus macrorhynchos | Ungraded | |
| Crow, Little | Corvus bennetti | Ungraded | |
| Crow, Northwestern | Corvus caurinus | Ungraded | |
| Crow, Pied | Corvus albus | Ungraded | |
| Crow, Stresemann's Bush | Zavattariornis stresemanni | Ungraded | |
| Crow, Torresian | Corvus orru | Ungraded | |
| Crows and jays | Corvidae | Ungraded | |
| Cuckoo | Cuculus canorus | Common | |
| Cuckoo, African | Cuculus gularis | Ungraded | |
| Cuckoo, African Emerald | Chrysococcyx cupreus | Ungraded | |
| Cuckoo, Asian Emerald | Chrysococcyx maculatus | Ungraded | |
| Cuckoo, Banded Bay | Cacomantis sonneratii | Ungraded | |
| Cuckoo, Black | Cuculus clamosus | Ungraded | |
| Cuckoo, Black-billed | Coccyzus erythropthalmus | Mega | |
| Cuckoo, Bornean Ground | Carpococcyx radiceus | Ungraded | |
| Cuckoo, Channel-billed | Scythrops novaehollandiae | Ungraded | |
| Cuckoo, Coral-billed Ground- | Carpococcyx renauldi | Ungraded | |
| Cuckoo, Dark-billed | Coccyzus melacoryphus | Ungraded | |
| Cuckoo, Didric | Chrysococcyx caprius | Ungraded | |
| Cuckoo, Dwarf | Coccycua pumila | Ungraded | |
| Cuckoo, Fan-tailed | Cacomantis flabelliformis | Ungraded | |
| Cuckoo, Great Lizard- | Saurothera merlini | Ungraded | |
| Cuckoo, Great Spotted | Clamator glandarius | Rare | |
| Cuckoo, Grey-bellied | Cacomantis passerinus | Ungraded | |
| Cuckoo, Guira | Guira guira | Ungraded | |
| Cuckoo, Hispaniolan Lizard | Coccyzus longirostris | Ungraded | |
| Cuckoo, Horsfield's Bronze | Chrysococcyx basalis | Ungraded | |
| Cuckoo, Indian | Cuculus micropterus | Ungraded | |
| Cuckoo, Jamaican Lizard | Coccyzus vetula | Ungraded | |
| Cuckoo, Klaas's | Chrysococcyx klaas | Ungraded | |
| Cuckoo, Lesser Ground- | Morococcyx erythropygus | Ungraded | |
| Cuckoo, Levaillant's | Clamator levaillantii | Ungraded | |
| Cuckoo, Little | Coccycua minuta | Ungraded | |
| Cuckoo, Madagascar Lesser | Cuculus rochii | Ungraded | |
| Cuckoo, Mangrove | Coccyzus minor | Ungraded | |
| Cuckoo, Oriental | Cuculus saturatus | Mega | |
| Cuckoo, Pallid | Cacomantis pallidus | Ungraded | |
| Cuckoo, Pavonine | Dromococcyx pavoninus | Ungraded | |
| Cuckoo, Pheasant | Dromococcyx phasianellus | Ungraded | |
| Cuckoo, Pied | Clamator jacobinus | Ungraded | |
| Cuckoo, Plaintive | Cacomantis merulinus | Ungraded | |
| Cuckoo, Red-chested | Cuculus solitarius | Ungraded | |
| Cuckoo, Shining Bronze | Chrysococcyx lucidus | Ungraded | |
| Cuckoo, Squirrel | Piaya cayana | Ungraded | |
| Cuckoo, Striped | Tapera naevia | Ungraded | |
| Cuckoo, Violet | Chrysococcyx xanthorhynchus | Ungraded | |
| Cuckoo, Yellow-billed | Coccyzus americanus | Mega | |
| Cuckoo, Yellow-throated | Chrysococcyx flavigularis | Ungraded | |
| Cuckooshrike, Bar-bellied | Coracina striata | Ungraded | |
| Cuckooshrike, Black | Campephaga flava | Ungraded | |
| Cuckoo-shrike, Black-winged | Coracina melaschistos | Ungraded | |
| Cuckooshrike, Large | Coracina macei | Ungraded | |
| Cuckooshrike, Madagascar | Coracina cinerea cinerea | Ungraded | |
| Cuckooshrike, Petit's | Campephaga petiti | Ungraded | |
| Cuckooshrike, White-bellied | Coracina papuensis | Ungraded | |
| Curassow, Bare-faced | Crax fasciolata | Ungraded | |
| Curassow, Black | Crax alector | Ungraded | |
| Curassow, Blue-billed | Crax alberti | Ungraded | |
| Curassow, Great | Crax rubra | Ungraded | |
| Curassow, Yellow-knobbed | Crax daubentoni | Ungraded | |
| Curlew | Numenius arquata | Common | |
| Curlew sp. | Numenius | Rare | |
| Curlew, Bristle-thighed | Numenius tahitiensis | Ungraded | |
| Curlew, Bush Stone- | Burhinus grallarius | Ungraded | |
| Curlew, Eskimo | Numenius borealis | Mega | |
| Curlew, Far Eastern | Numenius madagascariensis | Ungraded | |
| Curlew, Little | Numenius minutus | Mega | |
| Curlew, Long-billed | Numenius americanus | Ungraded | |
| Curlew, Slender-billed | Numenius tenuirostris | Mega | |
| Curlew, Stone | Burhinus oedicnemus | Scarce | |
| Currawong, Black | Strepera fuliginosa | Ungraded | |
| Currawong, Grey | Strepera versicolor | Ungraded | |
| Currawong, Pied | Strepera graculina | Ungraded | |
| Cutia, Himalayan | Cutia nipalensis | Ungraded | |
| Dacnis, Blue | Dacnis cayana | Ungraded | |
| Darter, African | Anhinga rufa | Ungraded | |
| Darter, Australian | Anhinga novaehollandiae | Ungraded | |
| Darter, Oriental | Anhinga melanogaster | Ungraded | |
| Dickcissel | Spiza americana | Ungraded | |
| Dipper | Cinclus cinclus | Common | |
| Dipper, American | Cinclus mexicanus | Ungraded | |
| Dipper, Black-bellied | Cinclus cinclus cinclus | Scarce | |
| Dipper, Brown | Cinclus pallasii | Ungraded | |
| Dipper, White-capped | Cinclus leucocephalus | Ungraded | |
| Diucon, Fire-eyed | Pyropa pyropa | Ungraded | |
| Diver sp. | Gavia sp. | Scarce | |
| Diver, Black-throated | Gavia arctica | Local | |
| Diver, Great Northern | Gavia immer | Local | |
| Diver, Pacific | Gavia pacifica | Mega | |
| Diver, Red-throated | Gavia stellata | Local | |
| Diver, White-billed | Gavia adamsii | Rare | |
| Dollarbird | Eurystomus orientalis | Ungraded | |
| Donacobius, Black-capped | Donacobius atricapilla | Ungraded | |
| Doradito, Crested | Pseudocolopteryx sclateri | Ungraded | |
| Doradito, Subtropical | Pseudocolopteryx acutipennis | Ungraded | |
| Dotterel | Charadrius morinellus | Local | |
| Dotterel, Banded | Charadrius bicinctus | Ungraded | |
| Dotterel, Black-fronted | Charadrius melanops | Ungraded | |
| Dotterel, Inland | Peltohyas australis | Ungraded | |
| Dotterel, Red-kneed | Erythrogonys cinctus | Ungraded | |
| Dove, Adamawa Turtle | Streptopelia hypopyrrha | Ungraded | |
| Dove, African Collared | Streptopelia risoria | Ungraded | |
| Dove, African Mourning | Streptopelia decipiens | Ungraded | |
| Dove, Bare-faced Ground- | Metriopelia ceciliae | Ungraded | |
| Dove, Barred Cuckoo- | Macropygia unchall | Ungraded | |
| Dove, Bar-shouldered | Geopelia humeralis | Ungraded | |
| Dove, Beautiful Fruit | Ptilinopus pulchellus | Ungraded | |
| Dove, Black-billed Wood- | Turtur abyssinicus | Ungraded | |
| Dove, Black-winged Ground- | Metriopelia melanoptera | Ungraded | |
| Dove, Blue Ground | Claravis pretiosa | Ungraded | |
| Dove, Blue-spotted Wood- | Turtur afer | Ungraded | |
| Dove, Brown Cuckoo- | Macropygia phasianella | Ungraded | |
| Dove, Caribbean | Leptotila jamaicensis | Ungraded | |
| Dove, Collared | Streptopelia decaocto | Common | |
| Dove, Common Ground- | Columbina passerina | Ungraded | |
| Dove, Croaking Ground- | Columbina cruziana | Ungraded | |
| Dove, Diamond | Geopelia cuneata | Ungraded | |
| Dove, Dusky Turtle | Streptopelia lugens | Ungraded | |
| Dove, Eared | Zenaida auriculata | Ungraded | |
| Dove, Ecuadorian Ground- | Columbina buckleyi | Ungraded | |
| Dove, Emerald | Chalcophaps indica | Ungraded | |
| Dove, Emerald-spotted Wood- | Turtur chalcospilos | Ungraded | |
| Dove, Galapagos | Zenaida galapagoensis | Ungraded | |
| Dove, Grey-fronted Quail- | Geotrygon caniceps | Ungraded | |
| Dove, Inca | Columbina inca | Ungraded | |
| Dove, Key West Quail- | Geotrygon chrysia | Ungraded | |
| Dove, Knob-billed Fruit | Ptilinopus insolitus | Ungraded | |
| Dove, Laughing | Spilopelia senegalensis | Common | |
| Dove, Lemon | Aplopelia larvata | Ungraded | |
| Dove, Malagasy Turtle | Nesoenas picturata | Ungraded | |
| Dove, Many-coloured Fruit- | Ptilinopus perousii | Ungraded | |
| Dove, Mourning | Zenaida macroura | Mega | |
| Dove, Namaqua | Oena capensis | Ungraded | |
| Dove, Oriental Turtle | Streptopelia orientalis | Mega | |
| Dove, Pacific | Zenaida meloda | Ungraded | |
| Dove, Peaceful | Geopelia placida | Ungraded | |
| Dove, Picui Ground- | Columbina picui | Ungraded | |
| Dove, Pink-spotted Fruit- | Ptilinopus perlatus | Ungraded | |
| Dove, Plain-breasted Ground | Columbina minuta | Ungraded | |
| Dove, Red Collared | Streptopelia tranquebarica | Ungraded | |
| Dove, Red-eyed Turtle | Streptopelia semitorquata | Ungraded | |
| Dove, Ring-necked | Streptopelia capicola | Ungraded | |
| Dove, Ruddy Ground- | Columbina talpacoti | Ungraded | |
| Dove, Scaled | Columbina squammata | Ungraded | |
| Dove, Spotted | Spilopelia chinensis | Ungraded | |
| Dove, Stock | Columba oenas | Common | |
| Dove, Tambourine | Turtur tympanistria | Ungraded | |
| Dove, Turtle | Streptopelia turtur | Local | |
| Dove, Vinaceous | Streptopelia vinacea | Ungraded | |
| Dove, White-tipped | Leptotila verreauxi | Ungraded | |
| Dove, White-winged | Zenaida asiatica | Ungraded | |
| Dove, Wompoo Fruit- | Ptilinopus magnificus | Ungraded | |
| Dove, Yellow-eyed Stock | Columba eversmanni | Ungraded | |
| Dove, Zebra | Geopelia striata | Ungraded | |
| Dove, Zenaida | Zenaida aurita | Ungraded | |
| Doves and pigeons | Columbidae | Ungraded | |
| Dowitcher sp. | Limnodromus | Rare | |
| Dowitcher, Asian | Limnodromus semipalmatus | Ungraded | |
| Dowitcher, Long-billed | Limnodromus scolopaceus | Rare | |
| Dowitcher, Short-billed | Limnodromus griseus | Mega | |
| Drongo, Andaman | Dicrurus andamanensis | Ungraded | |
| Drongo, Ashy | Dicrurus leucophaeus | Ungraded | |
| Drongo, Black | Dicrurus macrocercus | Ungraded | |
| Drongo, Bronzed | Dicrurus aeneus | Ungraded | |
| Drongo, Crested | Dicrurus forficatus | Ungraded | |
| Drongo, Crow-billed | Dicrurus annectans | Ungraded | |
| Drongo, Fork-tailed | Dicrurus adsimilis | Ungraded | |
| Drongo, Greater Racket-tailed | Dicrurus paradiseus | Ungraded | |
| Drongo, Hair-crested | Dicrurus hottentottus | Ungraded | |
| Drongo, Spangled | Dicrurus bracteatus | Ungraded | |
| Drongo, Sri Lanka | Dicrurus lophorinus | Ungraded | |
| Drongo, Velvet-mantled | Dicrurus modestus | Ungraded | |
| Drongo, White-bellied | Dicrurus caerulescens | Ungraded | |
| Drongo-Cuckoo, Asian | Surniculus lugubris | Ungraded | |
| Duck, African Black | Anas sparsa | Ungraded | |
| Duck, Andean | Oxyura ferruginea | Ungraded | |
| Duck, Australian Wood | Chenonetta jubata | Ungraded | |
| Duck, Black | Anas rubripes | Rare | |
| Duck, Black x Mallard | Anas rubripes x platyrhynchos | Scarce | |
| Duck, Black-bellied Whistling- | Dendrocygna autumnalis | Ungraded | |
| Duck, Blue | Hymenolaimus malacorhynchos | Ungraded | |
| Duck, Blue-billed | Oxyura australis | Ungraded | |
| Duck, Bronze-winged | Speculanas specularis | Ungraded | |
| Duck, Comb | Sarkidiornis sylvicola | Ungraded | |
| Duck, Crested | Lophonetta specularioides | Ungraded | |
| Duck, Falcated | Anas falcata | Ungraded | |
| Duck, Ferruginous | Aythya nyroca | Scarce | |
| Duck, Ferruginous x Pochard | Aythya nyroca x ferina | Local | |
| Duck, Flightless Steamer | Tachyeres brachypterus | Ungraded | |
| Duck, Flying Steamer | Tachyeres patachonicus | Ungraded | |
| Duck, Freckled | Stictonetta naevosa | Ungraded | |
| Duck, Fulvous Whistling- | Dendrocygna bicolor | Ungraded | |
| Duck, Harlequin | Histrionicus histrionicus | Mega | |
| Duck, Hartlaub's | Pteronetta hartlaubii | Ungraded | |
| duck, hybrid | hybrid duck | Ungraded | |
| Duck, Knob-billed | Sarkidiornis melanotos | Ungraded | |
| Duck, Lesser Whistling- | Dendrocygna javanica | Ungraded | |
| Duck, Long-tailed | Clangula hyemalis | Local | |
| Duck, Mandarin | Aix galericulata | Local | |
| Duck, Marbled | Marmaronetta angustirostris | Ungraded | |
| Duck, Masked | Nomonyx dominicus | Ungraded | |
| Duck, Meller's | Anas melleri | Ungraded | |
| Duck, Mottled | Anas fulvigula | Ungraded | |
| Duck, Muscovy | Cairina moschata | Ungraded | |
| Duck, Musk | Biziura lobata | Ungraded | |
| Duck, Pacific Black | Anas superciliosa | Ungraded | |
| Duck, Pink-eared | Malacorhynchus membranaceus | Ungraded | |
| Duck, Plumed Whistling- | Dendrocygna eytoni | Ungraded | |
| Duck, Ring-necked | Aythya collaris | Scarce | |
| Duck, Ruddy | Oxyura jamaicensis | Local | |
| Duck, Spot-billed | Anas poecilorhyncha | Ungraded | |
| Duck, Spotted Whistling- | Dendrocygna guttata | Ungraded | |
| Duck, Torrent | Merganetta armata | Ungraded | |
| Duck, Tufted | Aythya fuligula | Common | |
| Duck, Wandering Whistling- | Dendrocygna arcuata | Ungraded | |
| Duck, West Indian Whistling- | Dendrocygna arborea | Ungraded | |
| Duck, White-backed | Thalassornis leuconotus | Ungraded | |
| Duck, White-faced Whistling | Dendrocygna viduata | Ungraded | |
| Duck, White-headed | Oxyura leucocephala | Common | |
| Duck, White-winged | Cairina scutulata | Ungraded | |
| Duck, Wood | Aix sponsa | Ungraded | |
| Duck, Yellow-billed | Anas undulata | Ungraded | |
| ducks, dabbling | Anatinae | Ungraded | |
| Ducks, geese and swans | Anatidae | Ungraded | |
| Dunlin | Calidris alpina | Common | |
| Dunlin, American | Calidris alpina hudsonia | Ungraded | |
| Dunlin, Greenland | Calidris alpina arctica | Local | |
| Dunlin, Short-billed | Calidris alpina schinzii | Ungraded | |
| Dunnock | Prunella modularis | Common | |
| Eagle sp. | Aquila | Rare | |
| Eagle, African Fish | Haliaeetus vocifer | Ungraded | |
| Eagle, African Hawk- | Hieraatus fasciatus | Ungraded | |
| Eagle, Andaman Serpent | Spilornis elgini | Ungraded | |
| Eagle, Bald | Haliaeetus leucocephalus | Ungraded | |
| Eagle, Banded Hawk- | Circaetus cinerascens | Ungraded | |
| Eagle, Beaudouin's Snake- | Circaetus beaudouini | Ungraded | |
| Eagle, Black | Ictinaetus malayensis | Ungraded | |
| Eagle, Black Hawk- | Spizaetus tyrannus | Ungraded | |
| Eagle, Black-and-chestnut | Spizaetus isidori | Ungraded | |
| Eagle, Black-chested Buzzard- | Geranoaetus melanoleucus | Ungraded | |
| Eagle, Black-chested Snake- | Circaetus pectoralis | Ungraded | |
| Eagle, Bonelli's | Aquila fasciata | Mega | |
| Eagle, Booted | Aquila pennata | Mega | |
| Eagle, Brown Snake- | Circaetus cinereus | Ungraded | |
| Eagle, Cassin's Hawk | Spizaetus africanus | Ungraded | |
| Eagle, Central Nicobar Serpent | Spilornis minimus | Ungraded | |
| Eagle, Changeable Hawk- | Nisaetus cirrhatus | Ungraded | |
| Eagle, Congo Serpent | Dryotriorchis spectabilis | Ungraded | |
| Eagle, Crested Serpent- | Spilornis cheela | Ungraded | |
| Eagle, Crowned Hawk- | Stephanoaetus coronatus | Ungraded | |
| Eagle, Golden | Aquila chrysaetos | Local | |
| Eagle, Greater Spotted | Aquila clanga | Mega | |
| Eagle, Grey-headed Fish | Icthyophaga ichthyaetus | Ungraded | |
| Eagle, Harpy | Harpia harpyja | Ungraded | |
| Eagle, Imperial | Aquila heliaca | Mega | |
| Eagle, Indian Spotted | Aquila hastata | Ungraded | |
| Eagle, Lesser Fish | Icthyophaga humilis | Ungraded | |
| Eagle, Lesser Spotted | Aquila pomarina | Mega | |
| Eagle, Little | Hieraaetus morphnoides | Ungraded | |
| Eagle, Long-crested | Lophaetus occipitalis | Ungraded | |
| Eagle, Madagascar Fish- | Haliaeetus vociferoides | Ungraded | |
| Eagle, Martial | Polemaetus bellicosus | Ungraded | |
| Eagle, Mountain Hawk- | Nisaetus nipalensis | Ungraded | |
| Eagle, Ornate Hawk- | Spizaetus ornatus | Ungraded | |
| Eagle, Pallas's Fish | Haliaeetus leucoryphus | Ungraded | |
| Eagle, Short-toed | Circaetus gallicus | Mega | |
| Eagle, Southern Banded Snake- | Circaetus fasciolatus | Ungraded | |
| Eagle, Spanish Imperial | Aquila adalberti | Mega | |
| Eagle, Steller's Sea- | Haliaeetus pelagicus | Ungraded | |
| Eagle, Steppe | Aquila nipalensis | Mega | |
| Eagle, Tawny | Aquila rapax | Ungraded | |
| Eagle, Verreaux's | Aquila verreauxii | Ungraded | |
| Eagle, Wahlberg's | Aquila wahlbergi | Ungraded | |
| Eagle, Wedge-tailed | Aquila audax | Ungraded | |
| Eagle, White-bellied Sea- | Haliaeetus leucogaster | Ungraded | |
| Eagle, White-tailed | Haliaeetus albicilla | Scarce | |
| Eagle-Owl, Greyish | Bubo cinerascens | Ungraded | |
| Eagle-Owl, Philippine | Bubo philippensis | Ungraded | |
| Eagle-owl, Rock | Bubo bengalensis | Ungraded | |
| Earthcreeper, Band-tailed | Ochetorhynchus phoenicurus | Ungraded | |
| Egret, Cattle | Bubulcus ibis | Scarce | |
| Egret, Cattle x Little | Bubulcus ibis x Egretta garzetta | Ungraded | |
| Egret, Chinese | Egretta eulophotes | Ungraded | |
| Egret, Dimorphic | Egretta dimorpha | Ungraded | |
| Egret, Eastern Cattle | Bubulcus coromandus | Ungraded | |
| Egret, Eastern Great | Ardea alba modesta | Ungraded | |
| Egret, Eastern Reef- | Egretta sacra | Ungraded | |
| Egret, Great White | Ardea alba | Scarce | |
| Egret, Intermediate | Ardea intermedia | Ungraded | |
| Egret, Little | Egretta garzetta | Local | |
| Egret, Reddish | Egretta rufescens | Ungraded | |
| Egret, Slaty | Egretta vinaceigula | Ungraded | |
| Egret, Snowy | Egretta thula | Mega | |
| Egret, Western Reef- | Egretta gularis | Ungraded | |
| Egretta sp. | Egretta | Scarce | |
| Eider | Somateria mollissima | Local | |
| Eider, American (ssp. dresseri) | Somateria mollissima dresseri | Rare | |
| Eider, King | Somateria spectabilis | Rare | |
| Eider, Northern (ssp. borealis) | Somateria mollissima borealis | Rare | |
| Eider, Pacific (ssp. v-nigra) | Somateria mollissima v-nigra | Mega | |
| Eider, Spectacled | Somateria fischeri | Ungraded | |
| Eider, Steller's | Polysticta stelleri | Mega | |
| Elaenia, Caribbean | Elaenia martinica | Ungraded | |
| Elaenia, Forest | Myiopagis gaimardii | Ungraded | |
| Elaenia, Lesser | Elaenia chiriquensis | Ungraded | |
| Elaenia, Mountain | Elaenia frantzii | Ungraded | |
| Elaenia, Pacific | Myiopagis subplacens | Ungraded | |
| Elaenia, Plain-crested | Elaenia cristata | Ungraded | |
| Elaenia, Sierran | Elaenia pallatangae | Ungraded | |
| Elaenia, Yellow-bellied | Elaenia flavogaster | Ungraded | |
| Emerald, Andean | Amazilia franciae | Ungraded | |
| Emerald, Coppery-headed | Elvira cupreiceps | Ungraded | |
| Emerald, Cuban | Chlorostilbon ricordii | Ungraded | |
| Emerald, Fork-tailed | Chlorostilbon canivetii | Ungraded | |
| Emerald, Glittering-bellied | Chlorostilbon lucidus | Ungraded | |
| Emerald, Glittering-throated | Amazilia fimbriata | Ungraded | |
| Emerald, Green-tailed | Chlorostilbon alice | Ungraded | |
| Emerald, Honduran | Amazilia luciae | Ungraded | |
| Emerald, Plain-bellied | Amazilia leucogaster | Ungraded | |
| Emerald, Puerto Rican | Chlorostilbon maugaeus | Ungraded | |
| Emerald, Versicolored | Amazilia versicolor | Ungraded | |
| Emerald, Western | Chlorostilbon melanorhynchus | Ungraded | |
| Emerald, White-chested | Amazilia chionopectus | Ungraded | |
| Emerald, White-tailed | Elvira chionura | Ungraded | |
| Empidonax sp. | Empidonax | Mega | |
| Emu | Dromaius novaehollandiae | Ungraded | |
| Emuwren, Southern | | Ungraded | |
| Eremomela, Green-backed | Eremomela canescens | Ungraded | |
| Eremomela, Greencap | Eremomela scotops | Ungraded | |
| Eremomela, Rufous-crowned | Eremomela badiceps | Ungraded | |
| Eremomela, Senegal | Eremomela pusilla | Ungraded | |
| Eremomela, Yellow-bellied | Eremomela icteropygialis | Ungraded | |
| Euphonia, Chestnut-bellied | Euphonia pectoralis | Ungraded | |
| Euphonia, Elegant | Euphonia elegantissima | Ungraded | |
| Euphonia, Fulvous-vented | Euphonia fulvicrissa | Ungraded | |
| Euphonia, Golden-rumped | Euphonia cyanocephala | Ungraded | |
| Euphonia, Olive-backed | Euphonia gouldi | Ungraded | |
| Euphonia, Orange-bellied | Euphonia xanthogaster | Ungraded | |
| Euphonia, Purple-throated | Euphonia chlorotica | Ungraded | |
| Euphonia, Scrub | Euphonia affinis | Ungraded | |
| Euphonia, Spot-crowned | Euphonia imitans | Ungraded | |
| Euphonia, Thick-billed | Euphonia laniirostris | Ungraded | |
| Euphonia, Violaceous | Euphonia violacea | Ungraded | |
| Euphonia, White-lored | Euphonia chrysopasta | Ungraded | |
| Euphonia, White-vented | Euphonia minuta | Ungraded | |
| Euphonia, Yellow-crowned | Euphonia luteicapilla | Ungraded | |
| Euphonia, Yellow-throated | Euphonia hirundinacea | Ungraded | |
| Fairy, Black-eared | Heliothryx auritus | Ungraded | |
| Fairy, Purple-crowned | Heliothryx barroti | Ungraded | |
| Fairy-bluebird, Asian | Irena puella | Ungraded | |
| Fairywren, Blue-breasted | Malurus pulcherrimus | Ungraded | |
| Fairywren, Lovely | Malurus amabilis | Ungraded | |
| Fairywren, Purple-crowned | Malurus coronatus | Ungraded | |
| Fairywren, Red-winged | Malurus elegans | Ungraded | |
| Fairywren, White-shouldered | Malurus alboscapulatus | Ungraded | |
| Fairywren, White-winged | Malurus leucopterus | Ungraded | |
| falcon sp. | Falco | Rare | |
| Falcon, Amur | Falco amurensis | Mega | |
| Falcon, Aplomado | Falco femoralis | Ungraded | |
| Falcon, Barbary | Falco pelegrinoides | Ungraded | |
| Falcon, Bat | Falco rufigularis | Ungraded | |
| Falcon, Brown | Falco berigora | Ungraded | |
| Falcon, Eleonora's | Falco eleonorae | Mega | |
| Falcon, Grey | Falco hypoleucos | Ungraded | |
| Falcon, Gyr | Falco rusticolus | Rare | |
| Falcon, Laggar | Falco jugger | Ungraded | |
| Falcon, Lanner | Falco biarmicus | Common | |
| Falcon, Laughing | Herpetotheres cachinnans | Ungraded | |
| Falcon, Lined Forest | Micrastur gilvicollis | Ungraded | |
| Falcon, New Zealand | Falco novaeseelandiae | Ungraded | |
| Falcon, Orange-breasted | Falco deiroleucus | Ungraded | |
| Falcon, Peregrine | Falco peregrinus | Local | |
| Falcon, Peregrine (ssp. anatum) | Falco peregrinus anatum | Mega | |
| Falcon, Prairie | Falco mexicanus | Ungraded | |
| Falcon, Pygmy | Polihierax semitorquatus | Ungraded | |
| Falcon, Red-footed | Falco vespertinus | Scarce | |
| Falcon, Red-necked | Falco chicquera | Ungraded | |
| Falcon, Saker | Falco cherrug | Common | |
| Falcon, Sooty | Falco concolor | Ungraded | |
| Falcon, White-rumped | Polihierax insignis | Ungraded | |
| Falconet, Collared | Microhierax caerulescens | Ungraded | |
| Falconet, Philippine | Microhierax erythrogenys | Ungraded | |
| Falconet, White-fronted | Microhierax latifrons | Ungraded | |
| Fantail sp. | Rhipiduridae | Ungraded | |
| Fantail, Grey | Rhipidura albiscapa | Ungraded | |
| Fantail, New Zealand | Rhipidura fuliginosa | Ungraded | |
| Fantail, Pied | Rhipidura javanica | Ungraded | |
| Fantail, Rufous | Rhipidura rufifrons | Ungraded | |
| Fantail, White-bellied | Rhipidura euryura | Ungraded | |
| Fantail, White-browed | Rhipidura aureola | Ungraded | |
| Fantail, White-throated | Rhipidura albicollis | Ungraded | |
| Fantail, Yellow-bellied | Chelidorhynx hypoxantha | Ungraded | |
| Fernbird, New Zealand | Megalurus punctatus | Ungraded | |
| Ficedula flycatcher sp. | Ficedula | Rare | |
| Fieldfare | Turdus pilaris | Common | |
| Figbird | Sphecotheres viridis | Ungraded | |
| Figbird, Australasian | Sphecotheres vieilloti | Ungraded | |
| Finch sp. | Carduelis | Ungraded | |
| Finch, African Crimson-winged | Rhodopechys alienus | Ungraded | |
| Finch, Ash-breasted Sierra | Phrygilus plebejus | Ungraded | |
| Finch, Asian Rosy | Leucosticte arctoa | Ungraded | |
| Finch, Black Rosy- | Leucosticte atrata | Ungraded | |
| Finch, Black-and-rufous Warbling- | Poospiza nigrorufa | Ungraded | |
| Finch, Black-capped Warbling- | Poospiza melanoleuca | Ungraded | |
| Finch, Black-masked | Coryphaspiza melanotis | Ungraded | |
| Finch, Black-throated | Poephila cincta | Ungraded | |
| Finch, Bright-rumped Yellow | Sicalis uropigyalis | Ungraded | |
| Finch, Brown Capped Rosy | Leucosticte australis | Ungraded | |
| Finch, Canary-winged | Melanodera melanodera | Ungraded | |
| Finch, Cassin's | Carpodacus cassinii | Ungraded | |
| Finch, Cinereous | Piezorina cinerea | Ungraded | |
| Finch, Citril | Carduelis citrinella | Mega | |
| Finch, Coal-crested | Charitospiza eucosma | Ungraded | |
| Finch, Common Cactus | Geospiza scandens | Ungraded | |
| Finch, Common Diuca- | Diuca diuca | Ungraded | |
| Finch, Corsican Citril | Serinus corsicana | Ungraded | |
| Finch, Crimson | Neochmia phaeton | Ungraded | |
| Finch, Crimson-winged | Rhodopechys sanguineus | Ungraded | |
| Finch, Cut-throat | Amadina fasciata | Ungraded | |
| Finch, Desert | Rhodospiza obsoleta | Ungraded | |
| Finch, Double-barred | Taeniopygia bichenovii | Ungraded | |
| Finch, Gold-naped | Pyrrhoplectes epauletta | Ungraded | |
| Finch, Grassland Yellow- | Sicalis luteola | Ungraded | |
| Finch, Great Pampa- | Embernagra platensis | Ungraded | |
| Finch, Greenish Yellow- | Sicalis olivascens | Ungraded | |
| Finch, Grey Pileated | Coryphospingus pileatus | Ungraded | |
| Finch, Grey-browed Brush | Arremon assimilis | Ungraded | |
| Finch, Grey-crowned Rosy | Leucosticte tephrocotis | Ungraded | |
| Finch, Grey-hooded Sierra | Phrygilus gayi | Ungraded | |
| Finch, House | Carpodacus mexicanus | Mega | |
| Finch, Large Cactus | Geospiza conirostris | Ungraded | |
| Finch, Large Tree | Camarhynchus psittacula | Ungraded | |
| Finch, Large-footed | Pezopetes capitalis | Ungraded | |
| Finch, Mangrove | Camarhynchus heliobates | Ungraded | |
| Finch, Medium Ground- | Geospiza fortis | Ungraded | |
| Finch, Medium Tree- | Camarhynchus pauper | Ungraded | |
| Finch, Mongolian Trumpeter | Eremopsaltria mongolica | Ungraded | |
| Finch, Mourning Sierra- | Phrygilus fruticeti | Ungraded | |
| Finch, Patagonian Sierra- | Phrygilus patagonicus | Ungraded | |
| Finch, Peruvian Sierra- | Phrygilus punensis | Ungraded | |
| Finch, Plumbeous Sierra- | Phrygilus unicolor | Ungraded | |
| Finch, Puna Yellow- | Sicalis lutea | Ungraded | |
| Finch, Purple | Carpodacus purpureus | Ungraded | |
| Finch, Red Pileated | Coryphospingus cucullatus | Ungraded | |
| Finch, Red-browed | Neochmia temporalis | Ungraded | |
| Finch, Red-headed | Amadina erythrocephala | Ungraded | |
| Finch, Rufous-naped Brush | Atlapetes latinuchus | Ungraded | |
| Finch, Rufous-naped Brush- | Atlapetes rufinucha | Ungraded | |
| Finch, Saffron | Sicalis flaveola | Ungraded | |
| Finch, Santa Marta Brush | Atlapetes melanocephalus | Ungraded | |
| Finch, Sharp-beaked Ground | Geospiza difficilis | Ungraded | |
| Finch, Short-tailed | Idiopsar brachyurus | Ungraded | |
| Finch, Small Ground- | Geospiza fuliginosa | Ungraded | |
| Finch, Small Tree | Camarhynchus parvulus | Ungraded | |
| Finch, St. Lucia Black | Melanospiza richardsoni | Ungraded | |
| Finch, Stripe-headed Brush | Arremon torquatus | Ungraded | |
| Finch, Trumpeter | Bucanetes githagineus | Mega | |
| Finch, Vegetarian | Camarhynchus crassirostris | Ungraded | |
| Finch, Warbler | Certhidea olivacea | Ungraded | |
| Finch, Wedge-tailed Grass | Emberizoides herbicola | Ungraded | |
| Finch, White-winged Brush | Atlapetes leucopterus | Ungraded | |
| Finch, Woodpecker | Camarhynchus pallidus | Ungraded | |
| Finch, Yellow-thighed | Pselliophorus tibialis | Ungraded | |
| Finch, Zebra | Taeniopygia guttata | Ungraded | |
| Finchbill, Collared | Spizixos semitorques | Ungraded | |
| Finchbill, Crested | Spizixos canifrons | Ungraded | |
| Finfoot, African | Podica senegalensis | Ungraded | |
| Fireback, Crested | Lophura ignita | Ungraded | |
| Fireback, Siamese | Lophura diardi | Ungraded | |
| Firecrest | Regulus ignicapilla | Local | |
| Firecrest, Madeiran | Regulus madeirensis | Ungraded | |
| Firecrown, Juan-fernandez | Sephanoides fernandensis | Ungraded | |
| Firefinch, African | Lagonosticta rubricata | Ungraded | |
| Firefinch, Black-faced | Lagonosticta larvata | Ungraded | |
| Firefinch, Brown | Lagonosticta rufopicta | Ungraded | |
| Firefinch, Brown | Lagonosticta nitidula | Ungraded | |
| Firefinch, Jameson's | Lagonosticta rhodopareia | Ungraded | |
| Firefinch, Red-billed | Lagonosticta senegala | Ungraded | |
| Firetail, Beautiful | Stagonopleura bella | Ungraded | |
| Firetail, Diamond | Stagonopleura guttata | Ungraded | |
| Firetail, Red-eared | Stagonopleura oculata | Ungraded | |
| Firewood-gatherer | Anumbius annumbi | Ungraded | |
| Fiscal, Common | Lanius collaris | Ungraded | |
| Fiscal, Long-tailed | Lanius cabanisi | Ungraded | |
| Fiscal, Somali | Lanius somalicus | Ungraded | |
| Fiscal, Taita | Lanius dorsalis | Ungraded | |
| Flameback, Black-rumped | Dinopium benghalense | Ungraded | |
| Flameback, Common | Dinopium javanense | Ungraded | |
| Flameback, Crimson-backed | Chrysocolaptes stricklandi | Ungraded | |
| Flameback, Greater | Chrysocolaptes lucidus | Ungraded | |
| Flameback, Greater | Chrysocolaptes guttacristatus | Ungraded | |
| Flameback, Himalayan | Dinopium shorii | Ungraded | |
| Flameback, Red-headed | Chrysocolaptes erythrocephalus | Ungraded | |
| Flamingo sp. | Phoenicoparrus | Rare | |
| Flamingo, American | Phoenicopterus ruber | Ungraded | |
| Flamingo, Chilean | Phoenicopterus chilensis | Ungraded | |
| Flamingo, Greater | Phoenicopterus roseus | Common | |
| Flamingo, James's | Phoenicoparrus jamesi | Ungraded | |
| Flamingo, Lesser | Phoeniconaias minor | Ungraded | |
| Flatbill, Grey-crowned | Tolmomyias poliocephalus | Ungraded | |
| Flatbill, Olivaceous | Rhynchocyclus olivaceus | Ungraded | |
| Flatbill, Rufous-tailed | Ramphotrigon ruficauda | Ungraded | |
| Flatbill, Zimmer's | Tolmomyias assimilis | Ungraded | |
| Flicker, Andean | Colaptes rupicola | Ungraded | |
| Flicker, Campo | Colaptes campestris | Ungraded | |
| Flicker, Fernandina's | Colaptes fernandinae | Ungraded | |
| Flicker, Gilded | Colaptes chrysoides | Ungraded | |
| Flicker, Northern | Colaptes auratus | Mega | |
| Florican, Lesser | Eupodotis indica | Ungraded | |
| Flowerpecker, Andaman | Dicaeum virescens | Ungraded | |
| Flowerpecker, Black-sided | Dicaeum celebecium | Ungraded | |
| Flowerpecker, Fire-breasted | Dicaeum ignipectus | Ungraded | |
| Flowerpecker, Legge's | Dicaeum vincens | Ungraded | |
| Flowerpecker, Nilgiri | Dicaeum concolor | Ungraded | |
| Flowerpecker, Orange-bellied | Dicaeum trigonostigma | Ungraded | |
| Flowerpecker, Pale-billed | Dicaeum erythrorhynchos | Ungraded | |
| Flowerpecker, Plain | Dicaeum minullum | Ungraded | |
| Flowerpecker, Scarlet-backed | Dicaeum cruentatum | Ungraded | |
| Flowerpecker, Thick-billed | Dicaeum agile | Ungraded | |
| Flowerpecker, Whiskered | Dicaeum proprium | Ungraded | |
| Flowerpecker, Yellow-breasted | Prionochilus maculatus | Ungraded | |
| Flowerpecker, Yellow-sided | Dicaeum aureolimbatum | Ungraded | |
| Flowerpecker, Yellow-vented | Dicaeum chrysorrheum | Ungraded | |
| Flowerpiercer, Black | Diglossa humeralis | Ungraded | |
| Flowerpiercer, Chestnut-bellied | Diglossa gloriosissima | Ungraded | |
| Flower-piercer, Cinnamon-bellied | Diglossa baritula | Ungraded | |
| Flowerpiercer, Glossy | Diglossa lafresnayii | Ungraded | |
| Flowerpiercer, Grey-bellied | Diglossa carbonaria | Ungraded | |
| Flowerpiercer, Masked | Diglossopis cyanea | Ungraded | |
| Flowerpiercer, Slaty | Diglossa plumbea | Ungraded | |
| Flowerpiercer, White-sided | Diglossa albilatera | Ungraded | |
| Flycatcher, Abyssinian Slaty | Dioptrornis chocolatinus | Ungraded | |
| Flycatcher, Acadian | Empidonax virescens | Mega | |
| Flycatcher, African Blue- | Elminia longicauda | Ungraded | |
| Flycatcher, African Crested- | Trochocercus cyanomelas | Ungraded | |
| Flycatcher, African Dusky | Muscicapa adusta | Ungraded | |
| Flycatcher, African Grey | Bradornis microrhynchus | Ungraded | |
| Flycatcher, African Paradise- | Terpsiphone viridis | Ungraded | |
| Flycatcher, Alder | Empidonax alnorum | Mega | |
| Flycatcher, Alder/Willow | Empidonax alnorum/trailii | Mega | |
| Flycatcher, Amazon Royal | Onychorhynchus coronatus | Ungraded | |
| Flycatcher, Apical | Myiarchus apicalis | Ungraded | |
| Flycatcher, Ash-throated | Myiarchus cinerascens | Ungraded | |
| Flycatcher, Asian Verditer | Eumyias thalassinus | Ungraded | |
| Flycatcher, Atlas | Ficedula speculigera | Mega | |
| Flycatcher, Black-and-orange | Ficedula nigrorufa | Ungraded | |
| Flycatcher, Black-capped | Empidonax atriceps | Ungraded | |
| Flycatcher, Black-headed Paradise | Terpsiphone rufiventer | Ungraded | |
| Flycatcher, Blue-and-white | Cyanoptila cyanomelana | Ungraded | |
| Flycatcher, Blue-throated | Cyornis rubeculoides | Ungraded | |
| Flycatcher, Boat-billed | Megarynchus pitangua | Ungraded | |
| Flycatcher, Bran-colored | Myiophobus fasciatus | Ungraded | |
| Flycatcher, Brown | Muscicapa latirostris | Mega | |
| Flycatcher, Brown-breasted | Muscicapa muttui | Ungraded | |
| Flycatcher, Brown-crested | Myiarchus tyrannulus | Ungraded | |
| Flycatcher, Buff-breasted | Empidonax fulvifrons | Ungraded | |
| Flycatcher, Cassin's | Muscicapa cassini | Ungraded | |
| Flycatcher, Cinnamon | Pyrrhomyias cinnamomea | Ungraded | |
| Flycatcher, Cliff | Hirundinea ferruginea | Ungraded | |
| Flycatcher, Collared | Ficedula albicollis | Mega | |
| Flycatcher, Common Tody- | Todirostrum cinereum | Ungraded | |
| Flycatcher, Crowned Slaty | Griseotyrannus aurantioatrocristatus | Ungraded | |
| Flycatcher, Dark-sided | Muscicapa sibirica | Mega | |
| Flycatcher, Dull-blue | Eumyias sordida | Ungraded | |
| Flycatcher, Dusky | Empidonax oberholseri | Ungraded | |
| Flycatcher, Dusky-blue | Muscicapa comitata | Ungraded | |
| Flycatcher, Dusky-capped | Myiarchus tuberculifer | Ungraded | |
| Flycatcher, Dusky-chested | Myiozetetes luteiventris | Ungraded | |
| Flycatcher, Fairy | Stenostira scita | Ungraded | |
| Flycatcher, Fiscal | Sigelus silens | Ungraded | |
| Flycatcher, Flavescent | Myiophobus flavicans | Ungraded | |
| Flycatcher, Fork-tailed | Tyrannus savana | Mega | |
| Flycatcher, Gambaga | Muscicapa gambagae | Ungraded | |
| Flycatcher, Golden-crowned | Myiodynastes chrysocephalus | Ungraded | |
| Flycatcher, Great Crested | Myiarchus crinitus | Ungraded | |
| Flycatcher, Green-backed | Ficedula elisae | Ungraded | |
| Flycatcher, Grenada | Myiarchus nugator | Ungraded | |
| Flycatcher, Grey | Empidonax wrightii | Ungraded | |
| Flycatcher, Grey-capped | Myiozetetes granadensis | Ungraded | |
| Flycatcher, Grey-streaked | Muscicapa griseisticta | Mega | |
| Flycatcher, Hainan Blue | Cyornis hainanus | Ungraded | |
| Flycatcher, Hammond's | Empidonax hammondii | Ungraded | |
| Flycatcher, Hill Blue- | Cyornis banyumas | Ungraded | |
| Flycatcher, Japanese Paradise | Terpsiphone atrocaudata | Ungraded | |
| Flycatcher, Kashmir | Ficedula subrubra | Ungraded | |
| Flycatcher, La Sagra's | Myiarchus sagrae | Ungraded | |
| Flycatcher, Large-billed | Myiarchus magnirostris | Ungraded | |
| Flycatcher, Lead-coloured | Myioparus plumbeus | Ungraded | |
| Flycatcher, Leaden | Myiagra rubecula | Ungraded | |
| Flycatcher, Least | Empidonax minimus | Mega | |
| Flycatcher, Lesser Antillean | Myiarchus oberi | Ungraded | |
| Flycatcher, Little Pied | Ficedula westermanni | Ungraded | |
| Flycatcher, Long-tailed Silky- | Ptilogonys caudatus | Ungraded | |
| Flycatcher, Madagascar Paradise | Terpsiphone mutata | Ungraded | |
| Flycatcher, Marico | Bradornis mariquensis | Ungraded | |
| Flycatcher, Mascarene Paradise- | Terpsiphone bourbonnensis | Ungraded | |
| Flycatcher, Mugimaki | Ficedula mugimaki | Mega | |
| Flycatcher, Narcissus | Ficedula narcissina | Ungraded | |
| Flycatcher, Nilgiri | Eumyias albicaudata | Ungraded | |
| Flycatcher, Northern Black | Melaenornis edolioides | Ungraded | |
| Flycatcher, Northern Royal | Onuchorhynchus mexicanus fraterculus | Ungraded | |
| Flycatcher, Northern Scrub- | Sublegatus arenarum | Ungraded | |
| Flycatcher, Ochraceous-breasted | Nephelomyias ochraceiventris | Ungraded | |
| Flycatcher, Ochre-bellied | Mionectes oleagineus | Ungraded | |
| Flycatcher, Olive-sided | Contopus cooperi | Ungraded | |
| Flycatcher, Olive-striped | Mionectes olivaceus | Ungraded | |
| Flycatcher, Ornate | Myiotriccus ornatus | Ungraded | |
| Flycatcher, Pale | Bradornis pallidus | Ungraded | |
| Flycatcher, Pale Blue- | Cyornis unicolor | Ungraded | |
| Flycatcher, Pale-edged | Myiarchus cephalotes | Ungraded | |
| Flycatcher, Panamanian | Myiarchus panamensis | Ungraded | |
| Flycatcher, Paperbark | Myiagra nana | Ungraded | |
| Flycatcher, Pied | Ficedula hypoleuca | Local | |
| Flycatcher, Piratic | Legatus leucophaius | Ungraded | |
| Flycatcher, Puerto Rican | Myiarchus antillarum | Ungraded | |
| Flycatcher, Red-breasted | Ficedula parva | Scarce | |
| Flycatcher, Red-throated (Taiga) | Ficedula albicilla | Mega | |
| Flycatcher, Restless | Myiagra inquieta | Ungraded | |
| Flycatcher, Ruddy-tailed | Terenotriccus erythrurus | Ungraded | |
| Flycatcher, Rufous | Myiarchus semirufus | Ungraded | |
| Flycatcher, Rufous-gorgeted | Ficedula strophiata | Ungraded | |
| Flycatcher, Rufous-vented Paradise | Terpsiphone rufocinerea | Ungraded | |
| Flycatcher, Rusty-margined | Myiozetetes cayanensis | Ungraded | |
| Flycatcher, Sad | Myiarchus barbirostris | Ungraded | |
| Flycatcher, Satin | Myiagra cyanoleuca | Ungraded | |
| Flycatcher, Scissor-tailed | Tyrannus forficatus | Ungraded | |
| Flycatcher, Semi-collared | Ficedula semitorquata | Mega | |
| Flycatcher, Seychelles Paradise- | Terpsiphone corvina | Ungraded | |
| Flycatcher, Shining | Myiagra alecto | Ungraded | |
| Flycatcher, Short-crested | Myiarchus ferox | Ungraded | |
| Flycatcher, Slaty-blue | Ficedula tricolor | Ungraded | |
| Flycatcher, Slaty-capped | Leptopogon superciliaris | Ungraded | |
| Flycatcher, Snowy-browed | Ficedula hyperythra | Ungraded | |
| Flycatcher, Social | Myiozetetes similis | Ungraded | |
| Flycatcher, Southern Black- | Melaenornis pammelaina | Ungraded | |
| Flycatcher, Southern Scrub | Sublegatus modestus | Ungraded | |
| Flycatcher, Spotted | Muscicapa striata | Common | |
| Flycatcher, Streaked | Myiodynastes maculatus | Ungraded | |
| Flycatcher, Sulphur-bellied | Myiodynastes luteiventris | Ungraded | |
| Flycatcher, Swainson's | Myiarchus swainsoni | Ungraded | |
| Flycatcher, Swamp | Muscicapa aquatica | Ungraded | |
| Flycatcher, Tawny-chested | Aphanotriccus capitalis | Ungraded | |
| Flycatcher, Tickell's Blue- | Cyornis tickelliae | Ungraded | |
| Flycatcher, Tufted | Mitrephanes phaeocercus | Ungraded | |
| Flycatcher, Ultramarine | Ficedula superciliaris | Ungraded | |
| Flycatcher, Variegated | Empidonomus varius | Ungraded | |
| Flycatcher, Venezuelan | Myiarchus venezuelensis | Ungraded | |
| Flycatcher, Vermilion | Pyrocephalus rubinus | Ungraded | |
| Flycatcher, Vianikoro | Myiagra vanikorensis | Ungraded | |
| Flycatcher, White-bearded | Phelpsia inornata | Ungraded | |
| Flycatcher, White-bellied Blue- | Cyornis pallipes | Ungraded | |
| Flycatcher, White-bellied Crested- | Elminia albiventris | Ungraded | |
| Flycatcher, White-browed Forest- | Fraseria cinerascens | Ungraded | |
| Flycatcher, White-eyed Slaty | Melaenornis fischeri | Ungraded | |
| Flycatcher, White-ringed | Conopias albovittatus | Ungraded | |
| Flycatcher, White-tailed Blue- | Elminia albicauda | Ungraded | |
| Flycatcher, Willow | Empidonax traillii | Mega | |
| Flycatcher, Yellow-bellied | Empidonax flaviventris | Mega | |
| Flycatcher, Yellow-breasted | Tolmomyias flaviventris | Ungraded | |
| Flycatcher, Yellow-browed Tody- | Todirostrum chrysocrotaphum | Ungraded | |
| Flycatcher, Yellow-eyed Black- | Melaenornis ardesiacus | Ungraded | |
| Flycatcher, Yellowish | Empidonax flavescens | Ungraded | |
| Flycatcher, Yellow-rumped | Ficedula zanthopygia | Ungraded | |
| Flycatcher-shrike, Black-winged | Hemipus hirundinaceus | Ungraded | |
| Flycathcer, Chestnut-capped | Erythrocercus mccallii | Ungraded | |
| Flyrobin, Lemon-bellied | Microeca flavigaster | Ungraded | |
| Flyrobin, Yellow-bellied | Microeca flaviventris | Ungraded | |
| Fody, Mauritius | Foudia rubra | Ungraded | |
| Fody, Red | Foudia madagascariensis | Ungraded | |
| Fody, Rodrigues | Foudia flavicans | Ungraded | |
| Fody, Seychelles | Foudia sechellarum | Ungraded | |
| Forest-falcon, Cryptic | Micrastur mintoni | Ungraded | |
| Forktail, Black-backed | Enicurus immaculatus | Ungraded | |
| Forktail, Bornean | Enicurus borneensis | Ungraded | |
| Forktail, Little | Enicurus scouleri | Ungraded | |
| Forktail, Slaty-backed | Enicurus schistaceus | Ungraded | |
| Forktail, Spotted | Enicurus maculatus | Ungraded | |
| Forktail, White-crowned | Enicurus leschenaulti | Ungraded | |
| Francolin, Black | Francolinus francolinus | Ungraded | |
| Francolin, Cape | Pternistis capensis | Ungraded | |
| Francolin, Chestnut-naped | Pternistis castaneicollis | Ungraded | |
| Francolin, Coqui | Francolinus coqui | Ungraded | |
| Francolin, Crested | Francolinus saphaena | Ungraded | |
| Francolin, Double-spurred | Pternistis bicalcaratus | Ungraded | |
| Francolin, Erckel's | Pternistis erckelii | Ungraded | |
| Francolin, Grey | Francolinus pondicerianus | Ungraded | |
| Francolin, Grey-winged | Scleroptila afra | Ungraded | |
| Francolin, Heuglin's | Pternistis icterorhynchus | Ungraded | |
| Francolin, Hildebrandt's | Pternistis hildebrandti | Ungraded | |
| Francolin, Red-billed | Pternistis adspersus | Ungraded | |
| Francolin, Schlegel's | Francolinus schlegelii | Ungraded | |
| Francolin, Shelley's | Scleroptila shelleyi | Ungraded | |
| Francolin, White-throated | Peliperdix albogularis | Ungraded | |
| Friarbird, Helmeted | Philemon buceroides | Ungraded | |
| Friarbird, Little | Philemon citreogularis | Ungraded | |
| Friarbird, Noisy | Philemon corniculatus | Ungraded | |
| Friarbird, Silver-crowned | Philemon argenticeps | Ungraded | |
| Frigatebird sp. | Fregata | Mega | |
| Frigatebird, Ascension | Fregata aquila | Mega | |
| Frigatebird, Christmas Island | Fregata andrewsi | Ungraded | |
| Frigatebird, Great | Fregata minor | Ungraded | |
| Frigatebird, Lesser | Fregata ariel | Ungraded | |
| Frigatebird, Magnificent | Fregata magnificens | Mega | |
| Frogmouth, Hodgson's | Batrachostomus hodgsoni | Ungraded | |
| Frogmouth, Javan | Batrachostomus javensis | Ungraded | |
| Frogmouth, Large | Batrachostomus auritus | Ungraded | |
| Frogmouth, Marbled | Podargus ocellatus | Ungraded | |
| Frogmouth, Palawan | Batrachostomus chaseni | Ungraded | |
| Frogmouth, Papuan | Podargus papuensis | Ungraded | |
| Frogmouth, Philippine | Batrachostomus septimus | Ungraded | |
| Frogmouth, Sri Lanka | Batrachostomus moniliger | Ungraded | |
| Frogmouth, Tawny | Podargus strigoides | Ungraded | |
| Fruitcrow, Bare-necked | Gymnoderus foetidus | Ungraded | |
| Fruitcrow, Crimson | Haematoderus militaris | Ungraded | |
| Fruitcrow, Purple-throated | Querula purpurata | Ungraded | |
| Fruiteater, Barred | Pipreola arcuata | Ungraded | |
| Fruiteater, Golden-breasted | Pipreola aureopectus | Ungraded | |
| Fruiteater, Green-and-black | Pipreola riefferii | Ungraded | |
| Fruiteater, Orange-breasted | Pipreola jucunda | Ungraded | |
| Fulmar | Fulmarus glacialis | Local | |
| Fulmar, Southern | Fulmarus glacialoides | Ungraded | |
| Fulvetta, Brown-cheeked | Alcippe poioicephala | Ungraded | |
| Fulvetta, Grey-cheeked | Alcippe morrisonia | Ungraded | |
| Fulvetta, Rufous-winged | Alcippe castaneceps | Ungraded | |
| Fulvetta, White-browed | Alcippe vinipectus | Ungraded | |
| Fulvetta, Yellow-throated | Alcippe cinerea | Ungraded | |
| Gadfly petrel sp. | Pterodroma | Rare | |
| Gadwall | Anas strepera | Common | |
| Galah | Eolophus roseicapilla | Ungraded | |
| Gallinule, Allen's | Porphyrio alleni | Mega | |
| Gallinule, American Purple | Porphyrio martinicus | Mega | |
| Gallinule, Azure | Porphyrio flavirostris | Ungraded | |
| Gallinule, Common | Gallinula galeata | Ungraded | |
| Gallinule, Purple | Porphyrio porphyrio | Mega | |
| Gallinule, Spot-flanked | Gallinula melanops | Ungraded | |
| Gannet | Morus bassanus | Local | |
| Gannet, Australasian | Morus serrator | Ungraded | |
| Gannet, Cape | Morus capensis | Ungraded | |
| Garganey | Anas querquedula | Local | |
| Gerygone, Golden-bellied | Gerygone sulphurea | Ungraded | |
| Gerygone, Grey | Gerygone igata | Ungraded | |
| Gerygone, Western | Gerygone fusca | Ungraded | |
| glossy starling sp. | Lamprotornis | Ungraded | |
| Gnatcatcher, Black-tailed | Polioptila melanura | Ungraded | |
| Gnatcatcher, Blue-grey | Polioptila caerulea | Ungraded | |
| Gnatcatcher, Cuban | Polioptila lembeyei | Ungraded | |
| Gnatcatcher, Masked | Polioptila dumicola | Ungraded | |
| Gnatcatcher, Tropical | Polioptila plumbea | Ungraded | |
| Go-away-bird, Bare-faced | Corythaixoides personata | Ungraded | |
| Go-away-bird, Grey | Corythaixoides concolor | Ungraded | |
| Go-away-bird, White-bellied | Corythaixoides leucogaster | Ungraded | |
| Godwit sp. | Limosa | Ungraded | |
| Godwit, Bar-tailed | Limosa lapponica | Common | |
| Godwit, Black-tailed | Limosa limosa | Common | |
| Godwit, Hudsonian | Limosa haemastica | Mega | |
| Godwit, Marbled | Limosa fedoa | Ungraded | |
| Goldcrest | Regulus regulus | Common | |
| Goldcrest, Canary Islands | Regulus teneriffae | Ungraded | |
| Goldeneye | Bucephala clangula | Common | |
| Goldeneye, Barrow's | Bucephala islandica | Mega | |
| Goldenthroat, White-tailed | Polytmus guainumbi | Ungraded | |
| Goldfinch | Carduelis carduelis | Common | |
| Goldfinch, American | Carduelis tristis | Ungraded | |
| Goldfinch, Lawrence's | Carduelis lawrencei | Ungraded | |
| Goldfinch, Lesser | Carduelis psaltria | Ungraded | |
| Gonolek, Black-headed | Laniarius erythrogaster | Ungraded | |
| Gonolek, Papyrus | Laniarius mufumbiri | Ungraded | |
| Gonolek, Yellow-crowned | Laniarius barbarus | Ungraded | |
| Goosander | Mergus merganser | Common | |
| Goose, African Pygmy | Nettapus auritus | Ungraded | |
| Goose, Andean | Chloephaga melanoptera | Ungraded | |
| Goose, Ashy-headed | Chloephaga poliocephala | Ungraded | |
| Goose, Atlantic Canada | Branta canadensis canadensis | Scarce | |
| Goose, Bar-headed | Anser indicus | Ungraded | |
| Goose, Barnacle | Branta leucopsis | Common | |
| Goose, Bean | Anser fabalis | Local | |
| Goose, Blue-winged | Cyanochen cyanopterus | Ungraded | |
| Goose, Brent | Branta bernicla | Local | |
| Goose, Cackling | Branta hutchinsii | Scarce | |
| Goose, Canada | Branta canadensis | Common | |
| Goose, Cape Barren | Cereopsis novaehollandiae | Ungraded | |
| Goose, Cotton Pygmy- | Nettapus coromandelianus | Ungraded | |
| Goose, Dark-bellied Brent | Branta bernicla bernicla | Local | |
| Goose, Egyptian | Alopochen aegyptiaca | Common | |
| Goose, Emperor | Chen canagica | Ungraded | |
| Goose, Eurasian White-fronted | Anser albifrons albifrons | Local | |
| Goose, Green Pygmy- | Nettapus pulchellus | Ungraded | |
| Goose, Greenland White-fronted | Anser albifrons flavirostris | Local | |
| Goose, Greylag | Anser anser | Common | |
| goose, hybrid | | Ungraded | |
| Goose, Kelp | Chloephaga hybrida | Ungraded | |
| Goose, Lesser Canada | Branta canadensis parvipes | Scarce | |
| Goose, Lesser Snow | Chen caerulescens caerulescens | Ungraded | |
| Goose, Lesser White-fronted | Anser erythropus | Rare | |
| Goose, Magpie | Anseranas semipalmata | Ungraded | |
| Goose, Orinoco | Neochen jubata | Ungraded | |
| Goose, Pale-bellied Brent | Branta bernicla hrota | Local | |
| Goose, Pink-footed | Anser brachyrhynchus | Common | |
| Goose, Red-breasted | Branta ruficollis | Rare | |
| Goose, Richardson's Cackling | Branta hutchinsii hutchinsii | Scarce | |
| Goose, Ridgway's Cackling | Branta hutchinsii minima | Scarce | |
| Goose, Ross's | Anser rossii | Rare | |
| Goose, Ruddy-headed | Chloephaga rubidiceps | Ungraded | |
| Goose, Snow | Chen caerulescens | Scarce | |
| Goose, Snow (ssp. atlanticus) | Chen caerulescens atlanticus | Ungraded | |
| Goose, Spur-winged | Plectropterus gambensis | Ungraded | |
| Goose, Swan | Anser cygnoides | Ungraded | |
| Goose, Taiga Bean | Anser fabalis fabalis | Local | |
| Goose, Taverner's Cackling | Branta hutchinsii taverneri | Scarce | |
| Goose, Todd's Canada | Branta canadensis interior | Scarce | |
| Goose, Tundra Bean | Anser fabalis rossicus | Local | |
| Goose, Upland | Chloephaga picta | Ungraded | |
| Goose, White-fronted | Anser albifrons | Local | |
| Goshawk | Accipiter gentilis | Local | |
| Goshawk (ssp. atricapillus) | Accipiter gentilis atricapillus | Mega | |
| Goshawk, African | Accipiter tachiro | Ungraded | |
| Goshawk, Brown | Accipiter fasciatus | Ungraded | |
| Goshawk, Chinese | Accipiter soloensis | Ungraded | |
| Goshawk, Crested | Accipiter trivirgatus | Ungraded | |
| Goshawk, Dark Chanting | Melierax metabates | Ungraded | |
| Goshawk, Eastern Chanting | Melierax poliopterus | Ungraded | |
| Goshawk, Frances's | Accipiter francesiae | Ungraded | |
| Goshawk, Gabar | Melierax gabar | Ungraded | |
| Goshawk, Grey | Accipiter novaehollandiae | Ungraded | |
| Goshawk, Pale Chanting | Melierax canorus | Ungraded | |
| Goshawk, Red | Erythrotriorchis radiatus | Ungraded | |
| Grackle, Boat-tailed | Quiscalus major | Ungraded | |
| Grackle, Carib | Quiscalus lugubris | Ungraded | |
| Grackle, Common | Quiscalus quiscula | Ungraded | |
| Grackle, Greater Antillean | Quiscalus niger | Ungraded | |
| Grackle, Great-tailed | Quiscalus mexicanus | Ungraded | |
| Grackle, Red-bellied | Hypopyrrhus pyrohypogaster | Ungraded | |
| Grackle, Tristram's | Onychognathus tristramii | Ungraded | |
| Grandala | Grandala coelicolor | Ungraded | |
| Grassbird, Broad-tailed | Schoenicola platyurus | Ungraded | |
| Grassbird, Cape | Sphenoeacus afer | Ungraded | |
| Grassbird, Marsh | Locustella pryeri | Ungraded | |
| Grassbird, Papuan | Megalurus macrurus | Ungraded | |
| Grassbird, Tawny | Megalurus timoriensis | Ungraded | |
| Grassquit, Black-faced | Tiaris bicolor | Ungraded | |
| Grassquit, Blue-black | Volatinia jacarina | Ungraded | |
| Grassquit, Cuban | Tiaris canora | Ungraded | |
| Grassquit, Dull-colored | Tiaris obscurus | Ungraded | |
| Grassquit, Sooty | Tiaris fuliginosus | Ungraded | |
| Grassquit, Yellow-faced | Tiaris olivaceus | Ungraded | |
| Grasswren, Striated | Amytornis striatus | Ungraded | |
| Grebe sp. | Podicipedidae | Ungraded | |
| Grebe, Australasian | Tachybaptus novaehollandiae | Ungraded | |
| Grebe, Black-necked | Podiceps nigricollis | Local | |
| Grebe, Clark's | Aechmophorus clarkii | Ungraded | |
| Grebe, Great | Podiceps major | Ungraded | |
| Grebe, Great Crested | Podiceps cristatus | Common | |
| Grebe, Hoary-headed | Poliocephalus poliocephalus | Ungraded | |
| Grebe, Holboell's Red-necked | Podiceps grisegena holboelii | Mega | |
| Grebe, Least | Tachybaptus dominicus | Ungraded | |
| Grebe, Little | Tachybaptus ruficollis | Common | |
| Grebe, New Zealand | Poliocephalus rufopectus | Ungraded | |
| Grebe, Pied-billed | Podilymbus podiceps | Mega | |
| Grebe, Red-necked | Podiceps grisegena | Local | |
| Grebe, Silvery | Podiceps occipitalis | Ungraded | |
| Grebe, Slavonian | Podiceps auritus | Local | |
| Grebe, Western | Aechmophorus occidentalis | Ungraded | |
| Grebe, White-tufted | Rollandia rolland | Ungraded | |
| Greenbul, Appert's | Phyllastrephus apperti | Ungraded | |
| Greenbul, Golden | Calyptocichla serinus | Ungraded | |
| Greenbul, Little | Andropadus virens | Ungraded | |
| Greenbul, Simple | Chlorocichla simplex | Ungraded | |
| Greenbul, Slender-billed | Stelgidillas gracilirostris | Ungraded | |
| Greenbul, Sombre | Andropadus importunus | Ungraded | |
| Greenbul, Swamp | Thescelocichla leucopleura | Ungraded | |
| Greenbul, Yellow-bellied | Chlorocichla flaviventris | Ungraded | |
| Greenbul, Yellow-throated | Chlorocichla flavicollis | Ungraded | |
| Greenbul, Yellow-whiskered | Andropadus latirostris | Ungraded | |
| Greenfinch | Chloris chloris | Common | |
| Greenfinch, Black-headed | Chloris ambigua | Ungraded | |
| Greenfinch, Oriental | Chloris sinica | Ungraded | |
| Greenfinch, Vietnamese | Chloris monguilloti | Ungraded | |
| Greenlet, Golden-fronted | Hylophilus aurantiifrons | Ungraded | |
| Greenlet, Scrub | Hylophilus flavipes | Ungraded | |
| Greenshank | Tringa nebularia | Common | |
| Greenshank, Nordmann's | Tringa guttifer | Ungraded | |
| Grenadier, Purple | Uraeginthus ianthinogaster | Ungraded | |
| Grosbeak, Black-backed | Pheucticus aureoventris | Ungraded | |
| Grosbeak, Black-headed | Pheucticus melanocephalus | Ungraded | |
| Grosbeak, Blue | Passerina caerulea | Mega | |
| Grosbeak, Blue-black | Cyanocompsa cyanoides | Ungraded | |
| Grosbeak, Evening | Hesperiphona vespertina | Mega | |
| Grosbeak, Golden-bellied | Pheucticus chrysogaster | Ungraded | |
| Grosbeak, Golden-winged | Rhynchostruthus socotranus | Ungraded | |
| Grosbeak, Japanese | Eophona personata | Ungraded | |
| Grosbeak, Pine | Pinicola enucleator | Mega | |
| Grosbeak, Rose-breasted | Pheucticus ludovicianus | Mega | |
| Grosbeak, Sao Tome | Neospiza concolor | Ungraded | |
| Grosbeak, Slate-colored | Saltator grossus | Ungraded | |
| Grosbeak, Spot-winged | Mycerobas melanozanthos | Ungraded | |
| Grosbeak, White-winged | Mycerobas carnipes | Ungraded | |
| Grosbeak, Yellow | Pheucticus chrysopeplus | Ungraded | |
| Grosbeak, Yellow-billed (Chinese) | Eophona migratoria | Ungraded | |
| Ground-cuckoo, Banded | Neomorphus radiolosus | Ungraded | |
| Ground-dove, Long-tailed | Uropelia campestris | Ungraded | |
| Ground-finch, Large | Geospiza magnirostris | Ungraded | |
| Ground-roller, Long-tailed | Uratelornis chimaera | Ungraded | |
| Ground-roller, Pitta-like | Atelornis pittoides | Ungraded | |
| Ground-tyrant, Little | Muscisaxicola fluviatilis | Ungraded | |
| Grouse, Black | Lyrurus tetrix | Local | |
| Grouse, Blue | Dendragapus obscurus/fuliginosus | Ungraded | |
| Grouse, Caucasian Black | Lyrurus mlokosiewiczi | Ungraded | |
| Grouse, Dusky | Dendragapus obscurus | Ungraded | |
| Grouse, Hazel | Tetrastes bonasia | Ungraded | |
| Grouse, Red | Lagopus lagopus scotica | Common | |
| Grouse, Ruffed | Bonasa umbellus | Ungraded | |
| Grouse, Sage | Centrocercus urophasianus | Ungraded | |
| Grouse, Sharp-tailed | Tympanuchus phasianellus | Ungraded | |
| Grouse, Sooty | Dendragapus fuliginosus | Ungraded | |
| Grouse, Spruce | Falcipennis canadensis | Ungraded | |
| Grouse, Willow | Lagopus lagopus | Ungraded | |
| Grouse, Willow | Lagopus lagopus lagopus | Ungraded | |
| Guan, Andean | Penelope montagnii | Ungraded | |
| Guan, Band-tailed | Penelope argyrotis | Ungraded | |
| Guan, Black | Chamaepetes unicolor | Ungraded | |
| Guan, Black-fronted Piping | Pipile jacutinga | Ungraded | |
| Guan, Blue-throated Piping | Pipile cumanensis | Ungraded | |
| Guan, Cauca | Penelope perspicax | Ungraded | |
| Guan, Chestnut-bellied | Penelope ochrogaster | Ungraded | |
| Guan, Crested | Penelope purpurascens | Ungraded | |
| Guan, Dusky-legged | Penelope obscura | Ungraded | |
| Guan, Horned | Oreophasis derbianus | Ungraded | |
| Guan, Marail | Penelope marail | Ungraded | |
| Guan, Red-throated Piping | Pipile cujubi | Ungraded | |
| Guan, Sickle-winged | Chamaepetes goudotii | Ungraded | |
| Guan, Spix's | Penelope jacquacu | Ungraded | |
| Guan, Trinidad Piping | Pipile pipile | Ungraded | |
| Guan, Wattled | Aburria aburri | Ungraded | |
| Guan, White-winged | Penelope albipennis | Ungraded | |
| Guillemot | Uria aalge | Common | |
| Guillemot, Black | Cepphus grylle | Local | |
| Guillemot, Brünnich's | Uria lomvia | Mega | |
| Guillemot, Northern | Uria aalge aalge | Ungraded | |
| Guillemot, Pigeon | Cepphus columba | Ungraded | |
| Guillemot, Southern | Uria aalge albionis | Ungraded | |
| Guillemot, Spectacled | Cepphus carbo | Ungraded | |
| Guineafowl | Numididae | Ungraded | |
| Guineafowl, Crested | Guttera pucherani | Ungraded | |
| Guineafowl, Helmeted | Numida meleagris | Ungraded | |
| Guineafowl, Vulturine | Acryllium vulturinum | Ungraded | |
| Gull sp. | Larus sp. | Local | |
| gull sp. | Larus sp. | Ungraded | |
| Gull, American Herring | Larus smithsonianus | Rare | |
| Gull, Andean | Larus serranus | Ungraded | |
| Gull, Armenian | Larus armenicus | Mega | |
| Gull, Audouin's | Larus audouinii | Mega | |
| Gull, Azorean | Larus michahellis atlantis | Rare | |
| Gull, Baltic | Larus fuscus fuscus | Rare | |
| Gull, Band-tailed | Larus belcheri | Ungraded | |
| Gull, Black-billed | Larus bulleri | Ungraded | |
| Gull, Black-headed | Chroicocephalus ridibundus | Common | |
| Gull, Black-tailed | Larus crassirostris | Mega | |
| Gull, Bonaparte's | Chroicocephalus philadelphia | Rare | |
| Gull, Brown-headed | Chroicocephalus brunnicephalus | Ungraded | |
| Gull, Brown-hooded | Larus maculipennis | Ungraded | |
| Gull, California | Larus californicus | Ungraded | |
| Gull, Cape | Larus vetula | Ungraded | |
| Gull, Caspian | Larus cachinnans | Local | |
| Gull, Common | Larus canus | Common | |
| Gull, Dolphin | Leucophaeus scoresbii | Ungraded | |
| Gull, Franklin's | Larus pipixcan | Rare | |
| Gull, Glaucous | Larus hyperboreus | Local | |
| Gull, Glaucous x Herring | Larus hyperboreus x argentatus | Ungraded | |
| Gull, Glaucous-winged | Larus glaucescens | Mega | |
| Gull, Great Black-backed | Larus marinus | Common | |
| Gull, Grey | Leucophaeus modestus | Ungraded | |
| Gull, Grey-headed | Chroicocephalus cirrocephalus | Ungraded | |
| Gull, Hartlaub's | Larus hartlaubii | Ungraded | |
| Gull, Heermann's | Larus heermanni | Ungraded | |
| Gull, Herring | Larus argentatus | Common | |
| Gull, Heuglin's | Larus fuscus heuglini | Mega | |
| Gull, Iceland | Larus glaucoides | Local | |
| Gull, Ivory | Pagophila eburnea | Rare | |
| Gull, Kelp | Larus dominicanus | Ungraded | |
| Gull, Kumlien's | Larus glaucoides kumlieni | Scarce | |
| Gull, Laughing | Larus atricilla | Rare | |
| Gull, Lava | Larus fuliginosus | Ungraded | |
| Gull, Lesser Black-backed | Larus fuscus | Common | |
| Gull, Little | Hydrocoloeus minutus | Local | |
| Gull, Mediterranean | Ichthyaetus melanocephalus | Local | |
| Gull, Mediterranean x Black-headed | Ichthyaetus melanocephalus x Chroicocephalus ridibundus | Ungraded | |
| Gull, Mew | Larus canus brachyrhychus | Mega | |
| Gull, Olrog's | Larus atlanticus | Ungraded | |
| Gull, Pacific | Larus pacificus | Ungraded | |
| Gull, Pallas's | Ichthyaetus ichthyaetus | Mega | |
| Gull, Red-billed | Larus scopulinus | Ungraded | |
| Gull, Relict | Ichthyaetus relictus | Ungraded | |
| Gull, Ring-billed | Larus delawarensis | Scarce | |
| Gull, Ring-billed x Common | Larus delawarensis x canus | Ungraded | |
| Gull, Ross's | Rhodostethia rosea | Rare | |
| Gull, Sabine's | Xema sabini | Scarce | |
| Gull, Saunders's | Chroicocephalus saundersi | Ungraded | |
| Gull, Silver | Chroicocephalus novaehollandiae | Ungraded | |
| Gull, Slaty-backed | Larus schistisagus | Mega | |
| Gull, Slender-billed | Chroicocephalus genei | Mega | |
| Gull, Sooty | Ichthyaetus hemprichii | Ungraded | |
| Gull, Swallow-tailed | Creagrus furcatus | Ungraded | |
| Gull, Thayer's | Larus thayeri | Mega | |
| Gull, Vega | Larus vegae | Mega | |
| Gull, Western | Larus occidentalis | Ungraded | |
| Gull, White-eyed | Ichthyaetus leucophthalmus | Ungraded | |
| Gull, Yellow-footed | Larus livens | Ungraded | |
| Gull, Yellow-legged | Larus michahellis | Local | |
| Hammerkop | Scopus umbretta | Ungraded | |
| Hardhead | Aythya australis | Ungraded | |
| Harrier sp. | Circus | Scarce | |
| Harrier, African Marsh | Circus ranivorus | Ungraded | |
| Harrier, Black | Circus maurus | Ungraded | |
| Harrier, Cinereous | Circus cinereus | Ungraded | |
| Harrier, Eastern Marsh | Circus spilonotus | Ungraded | |
| Harrier, Hen | Circus cyaneus | Local | |
| Harrier, Long-winged | Circus buffoni | Ungraded | |
| Harrier, Marsh | Circus aeruginosus | Local | |
| Harrier, Montagu's | Circus pygargus | Scarce | |
| Harrier, Northern | Circus cyaneus hudsonius | Rare | |
| Harrier, Pallid | Circus macrourus | Rare | |
| Harrier, Pied | Circus melanoleucos | Ungraded | |
| Harrier, Spotted | Circus assimilis | Ungraded | |
| Harrier, Swamp | Circus approximans | Ungraded | |
| Hawfinch | Coccothraustes coccothraustes | Local | |
| Hawk, African Harrier | Polyboroides typus | Ungraded | |
| Hawk, American Rough-legged | Buteo lagopus sanctijohannis | Ungraded | |
| Hawk, Bat | Macheiramphus alcinus | Ungraded | |
| Hawk, Bicolored | Accipiter bicolor | Ungraded | |
| Hawk, Black-collared | Busarellus nigricollis | Ungraded | |
| Hawk, Black-faced | Leucopternis melanops | Ungraded | |
| Hawk, Broad-winged | Buteo platypterus | Ungraded | |
| Hawk, Common Black- | Buteogallus anthracinus | Ungraded | |
| Hawk, Cooper's | Accipiter cooperii | Ungraded | |
| Hawk, Crane | Geranospiza caerulescens | Ungraded | |
| Hawk, Cuban Black | Buteogallus gundlachii | Ungraded | |
| Hawk, Ferruginous | Buteo regalis | Ungraded | |
| Hawk, Galapagos | Buteo galapagoensis | Ungraded | |
| Hawk, Great Black- | Buteogallus urubitinga | Ungraded | |
| Hawk, Grey | Buteo plagiatus | Ungraded | |
| Hawk, Grey-lined | Buteo nitidus | Ungraded | |
| Hawk, Gundlach's | Accipiter gundlachi | Ungraded | |
| Hawk, Harris's | Parabuteo unicinctus | Ungraded | |
| Hawk, Madagascar Harrier- | Polyboroides radiatus | Ungraded | |
| Hawk, Mangrove Black | Buteogallus anthracinus subtilis | Ungraded | |
| Hawk, Mantled | Leucopternis polionota | Ungraded | |
| Hawk, Red-backed | Buteo polyosoma | Ungraded | |
| Hawk, Red-shouldered | Buteo lineatus | Ungraded | |
| Hawk, Red-tailed | Buteo jamaicensis | Ungraded | |
| Hawk, Roadside | Buteo magnirostris | Ungraded | |
| Hawk, Rufous Crab | Buteogallus aequinoctialis | Ungraded | |
| Hawk, Savanna | Buteogallus meridionalis | Ungraded | |
| Hawk, Semiplumbeous | Leucopternis semiplumbea | Ungraded | |
| Hawk, Sharp-shinned | Accipiter striatus | Ungraded | |
| Hawk, Slate-colored | Leucopternis schistaceus | Ungraded | |
| Hawk, Swainson's | Buteo swainsoni | Ungraded | |
| Hawk, Tiny | Accipiter superciliosus | Ungraded | |
| Hawk, White | Leucopternis albicollis | Ungraded | |
| Hawk, White-necked | Leucopternis lacernulatus | Ungraded | |
| Hawk, White-rumped | Buteo leucorrhous | Ungraded | |
| Hawk, White-tailed | Buteo albicaudatus | Ungraded | |
| Hawk, Zone-tailed | Buteo albonotatus | Ungraded | |
| Hawk-Cuckoo, Common | Hierococcyx varius | Ungraded | |
| Hawk-Cuckoo, Large | Hierococcyx sparverioides | Ungraded | |
| Hawk-Cuckoo, Malaysian | Hierococcyx fugax | Ungraded | |
| Heathwren, Shy | Hylacola cautus | Ungraded | |
| Helmetcrest, Bearded | Oxypogon guerinii | Ungraded | |
| Helmetcrest, Blue-bearded | Oxypogon cyanolaemus | Ungraded | |
| Helmetshrike, Red-billed | Prionops caniceps | Ungraded | |
| Helmet-shrike, Retz's | Prionops retzii | Ungraded | |
| Helmetshrike, White | Prionops plumatus | Ungraded | |
| Hemipode, Andalusian | Turnix sylvatica | Ungraded | |
| Hemispingus, Black-capped | Hemispingus atropileus | Ungraded | |
| Hermit, Bronzy | Glaucis aeneus | Ungraded | |
| Hermit, Green | Phaethornis guy | Ungraded | |
| Hermit, Koepcke's | Phaethornis koepckeae | Ungraded | |
| Hermit, Little | Phaethornis longuemareus | Ungraded | |
| Hermit, Long-tailed | Phaethornis superciliosus | Ungraded | |
| Hermit, Pale-bellied | Phaethornis anthophilus | Ungraded | |
| Hermit, Planalto | Phaethornis pretrei | Ungraded | |
| Hermit, Reddish | Phaethornis ruber | Ungraded | |
| Hermit, Rufous-breasted | Glaucis hirsutus | Ungraded | |
| Hermit, Saw-billed | Ramphodon naevius | Ungraded | |
| Hermit, Scale-throated | Phaethornis eurynome | Ungraded | |
| Hermit, Sooty-capped | Phaethornis augusti | Ungraded | |
| Hermit, Tawny-bellied | Phaethornis syrmatophorus | Ungraded | |
| Hermit, White-whiskered | Phaethornis yaruqui | Ungraded | |
| Heron sp. | Ardeidae | Rare | |
| Heron, Agami | Agamia agami | Ungraded | |
| Heron, Bare-throated Tiger- | Tigrisoma mexicanum | Ungraded | |
| Heron, Black | Egretta ardesiaca | Ungraded | |
| Heron, Black-headed | Ardea melanocephala | Ungraded | |
| Heron, Boat-billed | Cochlearius cochlearius | Ungraded | |
| Heron, Capped | Pilherodius pileatus | Ungraded | |
| Heron, Chinese Pond | Ardeola bacchus | Ungraded | |
| Heron, Cocoi | Ardea cocoi | Ungraded | |
| Heron, Fasciated Tiger- | Tigrisoma fasciatum | Ungraded | |
| Heron, Galapagos | Butorides sundevalli | Ungraded | |
| Heron, Goliath | Ardea goliath | Ungraded | |
| Heron, Great Blue | Ardea herodias | Mega | |
| Heron, Great-billed | Ardea sumatrana | Ungraded | |
| Heron, Green | Butorides virescens | Mega | |
| Heron, Green-backed | Butorides striata | Mega | |
| Heron, Grey | Ardea cinerea | Common | |
| Heron, Humblot's | Ardea humbloti | Ungraded | |
| Heron, Indian Pond | Ardeola grayii | Mega | |
| Heron, Javan Pond- | Ardeola speciosa | Ungraded | |
| Heron, Little Blue | Egretta caerulea | Mega | |
| Heron, Madagascar Pond | Ardeola idae | Ungraded | |
| Heron, Malayan Night- | Gorsachius melanolophus | Ungraded | |
| Heron, Night | Nycticorax nycticorax | Scarce | |
| Heron, Pied | Egretta picata | Ungraded | |
| Heron, Purple | Ardea purpurea | Scarce | |
| Heron, Rufescent Tiger- | Tigrisoma lineatum | Ungraded | |
| Heron, Rufous Night | Nycticorax caledonicus | Ungraded | |
| Heron, Rufous-bellied | Ardeola rufiventris | Ungraded | |
| Heron, Squacco | Ardeola ralloides | Rare | |
| Heron, Tricoloured | Egretta tricolor | Mega | |
| Heron, Whistling | Syrigma sibilatrix | Ungraded | |
| Heron, White-backed Night | Gorsachius leuconotus | Ungraded | |
| Heron, White-bellied | Ardea insignis | Ungraded | |
| Heron, White-crested Tiger- | Tigriornis leucolophus | Ungraded | |
| Heron, White-faced | Ardea novaehollandiae | Ungraded | |
| Heron, Yellow-crowned Night | Nyctanassa violacea | Ungraded | |
| Herring x Lesser Black-backed Gull | Larus argentatus x fuscus | Ungraded | |
| Hillstar, Ecuadorian | Oreotrochilus chimborazo | Ungraded | |
| Hillstar, White-tailed | Urochroa bougueri | Ungraded | |
| Hoatzin | Opisthocomus hoazin | Ungraded | |
| Hobby | Falco subbuteo | Common | |
| Hobby, Australian | Falco longipennis | Ungraded | |
| Honeycreeper, Golden-collared | Iridophanes pulcherrimus | Ungraded | |
| Honeycreeper, Green | Chlorophanes spiza | Ungraded | |
| Honeycreeper, Purple | Cyanerpes caeruleus | Ungraded | |
| Honeycreeper, Red-legged | Cyanerpes cyaneus | Ungraded | |
| Honeycreeper, Shining | Cyanerpes lucidus | Ungraded | |
| Honeyeater, Black-headed | Melithreptus affinis | Ungraded | |
| Honeyeater, Blue-faced | Entomyzon cyanotis | Ungraded | |
| Honeyeater, Bridled | Lichenostomus frenatus | Ungraded | |
| Honeyeater, Brown | Lichmera indistincta | Ungraded | |
| Honeyeater, Brown-backed | Ramsayornis modestus | Ungraded | |
| Honeyeater, Crescent | Phylidonyris pyrrhopterus | Ungraded | |
| Honeyeater, Crow | Gymnomyza aubryana | Ungraded | |
| Honeyeater, Grey-eared | Lichmera incana | Ungraded | |
| Honeyeater, Grey-fronted | Lichenostomus plumulus | Ungraded | |
| Honeyeater, Lewin's | Meliphaga lewinii | Ungraded | |
| Honeyeater, Macleay's | Xanthotis macleayana | Ungraded | |
| Honeyeater, New Holland | Phylidonyris novaehollandiae | Ungraded | |
| Honeyeater, Red-headed | Myzomela erythrocephala | Ungraded | |
| Honeyeater, Regent | Anthochaera phrygia | Ungraded | |
| Honeyeater, Singing | Lichenostomus virescens | Ungraded | |
| Honeyeater, Smoky | Melipotes fumigatus | Ungraded | |
| Honeyeater, Spiny-cheeked | Acanthagenys rufogularis | Ungraded | |
| Honeyeater, Swan River | Melithreptus chloropsis | Ungraded | |
| Honeyeater, Tawny-crowned | Philydonyris melanops | Ungraded | |
| Honeyeater, Varied | Lichenostomus versicolor | Ungraded | |
| Honeyeater, White-cheeked | Phylidonyris niger | Ungraded | |
| Honeyeater, White-plumed | Lichenostomus penicillatus | Ungraded | |
| Honeyeater, White-throated | Melithreptus albogularis | Ungraded | |
| Honeyeater, Yellow | Lichenostomus flavus | Ungraded | |
| Honeyeater, Yellow-browed | Melidectes rufocrissalis | Ungraded | |
| Honeyeater, Yellow-faced | Lichenostomus chrysops | Ungraded | |
| Honeyeater, Yellow-gaped | Meliphaga flavirictus | Ungraded | |
| Honeyeater, Yellow-plumed | Lichenostomus ornatus | Ungraded | |
| Honeyeater, Yellow-spotted | Meliphaga notata | Ungraded | |
| Honeyeater, Yellow-throated | Lichenostomus flavicollis | Ungraded | |
| Honeyguide, Dwarf | Indicator pumilio | Ungraded | |
| Honeyguide, Greater | Indicator indicator | Ungraded | |
| Honeyguide, Lesser | Indicator minor | Ungraded | |
| Honeyguide, Spotted | Indicator maculatus | Ungraded | |
| Honeyguide, Yellow-rumped | Indicator xanthonotus | Ungraded | |
| Hoopoe | Upupa epops | Scarce | |
| Hoopoe, African | Upupa senegalensis | Ungraded | |
| Hoopoe, Forest Wood | Phoeniculus castaneiceps | Ungraded | |
| Hoopoe, Madagascar | Upupa marginata | Ungraded | |
| Hornbill sp. | Bucerotidae | Ungraded | |
| Hornbill, African Grey | Tockus nasutus | Ungraded | |
| Hornbill, African Pied | Tockus fasciatus | Ungraded | |
| Hornbill, Asian Black | Anthracoceros malayanus | Ungraded | |
| Hornbill, Black Dwarf | Tockus hartlaubi | Ungraded | |
| Hornbill, Black-and-white-casqued | Ceratogymna subcylindricus | Ungraded | |
| Hornbill, Black-casqued Wattled | Ceratogymna atrata | Ungraded | |
| Hornbill, Blyth's | Aceros plicatus | Ungraded | |
| Hornbill, Bradfield's | Tockus bradfieldi | Ungraded | |
| Hornbill, Brown | Anorrhinus tickelli | Ungraded | |
| Hornbill, Bushy-crested | Anorrhinus galeritus | Ungraded | |
| Hornbill, Crowned | Tockus alboterminatus | Ungraded | |
| Hornbill, Damara | Tockus damarensis | Ungraded | |
| Hornbill, Eastern Yellow-billed | Tockus flavirostris | Ungraded | |
| Hornbill, Great | Buceros bicornis | Ungraded | |
| Hornbill, Hemprich's | Tockus hemprichii | Ungraded | |
| Hornbill, Indian Grey | Ocyceros birostris | Ungraded | |
| Hornbill, Jackson's | Tockus jacksoni | Ungraded | |
| Hornbill, Malabar Grey | Ocyceros griseus | Ungraded | |
| Hornbill, Malabar Pied- | Anthracoceros coronatus | Ungraded | |
| Hornbill, Monteiro's | Tockus monteiri | Ungraded | |
| Hornbill, Northern Ground- | Bucorvus abyssinicus | Ungraded | |
| Hornbill, Oriental Pied | Anthracoceros albirostris | Ungraded | |
| Hornbill, Piping | Ceratogymna fistulator | Ungraded | |
| Hornbill, Red-billed | Tockus erythrorhynchus | Ungraded | |
| Hornbill, Red-billed Dwarf | Tockus camurus | Ungraded | |
| Hornbill, Rhinoceros | Buceros rhinoceros | Ungraded | |
| Hornbill, Rufous-necked | Aceros nipalensis | Ungraded | |
| Hornbill, Silvery-cheeked | Bycanistes brevis | Ungraded | |
| Hornbill, Southern Ground | Bucorvus leadbeateri | Ungraded | |
| Hornbill, Southern Red-billed | Tockus rufirostris | Ungraded | |
| Hornbill, Southern Yellow-billed | Tockus leucomelas | Ungraded | |
| Hornbill, Sri Lanka Grey | Ocyceros gingalensis | Ungraded | |
| Hornbill, Trumpeter | Bycanistes bucinator | Ungraded | |
| Hornbill, Von Der Decken's | Tockus deckeni | Ungraded | |
| Hornbill, Western Red-billed | Tockus kempi | Ungraded | |
| Hornbill, White-crested | Tockus albocristatus | Ungraded | |
| Hornbill, White-thighed | Ceratogymna albotibialis | Ungraded | |
| Hornbill, Wreathed | Aceros undulatus | Ungraded | |
| Hornero, Pacific | Furnarius cinnamomeus | Ungraded | |
| Hornero, Pale-legged | Furnarius leucopus | Ungraded | |
| Hornero, Rufous | Furnarius rufus | Ungraded | |
| Hummingbird, Allen's | Selasphorus sasin | Ungraded | |
| Hummingbird, Amazilia | Amazilia amazilia | Ungraded | |
| Hummingbird, Anna's | Calypte anna | Ungraded | |
| Hummingbird, Antillean Crested | Orthorhyncus cristatus | Ungraded | |
| Hummingbird, Bee | Mellisuga helenae | Ungraded | |
| Hummingbird, Black-bellied | Eupherusa nigriventris | Ungraded | |
| Hummingbird, Black-chinned | Archilochus alexandri | Ungraded | |
| Hummingbird, Blue-chested | Amazilia amabilis | Ungraded | |
| Hummingbird, Blue-headed | Cyanophaia bicolor | Ungraded | |
| Hummingbird, Broad-billed | Cynanthus latirostris | Ungraded | |
| Hummingbird, Broad-tailed | Selasphorus platycercus | Ungraded | |
| Hummingbird, Buff-bellied | Amazilia yucatanensis | Ungraded | |
| Hummingbird, Buffy | Leucippus fallax | Ungraded | |
| Hummingbird, Calliope | Stellula calliope | Ungraded | |
| Hummingbird, Cinnamon | Amazilia rutila | Ungraded | |
| Hummingbird, Copper-rumped | Amazilia tobaci | Ungraded | |
| Hummingbird, Costa's | Calypte costae | Ungraded | |
| Hummingbird, Fiery-throated | Panterpe Insignis | Ungraded | |
| Hummingbird, Giant | Patagona gigas | Ungraded | |
| Hummingbird, Green-and-white | Amazilia viridicauda | Ungraded | |
| Hummingbird, Indigo-capped | Amazilia cyanifrons | Ungraded | |
| Hummingbird, Loja | Amazilia amazilia alticola | Ungraded | |
| Hummingbird, Magnificent | Eugenes fulgens | Ungraded | |
| Hummingbird, Many-spotted | Taphrospilus hypostictus | Ungraded | |
| Hummingbird, Purple-chested | Amazilia rosenbergi | Ungraded | |
| Hummingbird, Ruby-throated | Archilochus colubris | Ungraded | |
| Hummingbird, Ruby-topaz | Chrysolampis mosquitus | Ungraded | |
| Hummingbird, Rufous | Selasphorus rufus | Ungraded | |
| Hummingbird, Rufous-tailed | Amazilia tzacatl | Ungraded | |
| Hummingbird, Sapphire-bellied | Lepidopyga lilliae | Ungraded | |
| Hummingbird, Sapphire-throated | Lepidopyga coeruleogularis | Ungraded | |
| Hummingbird, Scaly-breasted | Phaeochroa cuvierii | Ungraded | |
| Hummingbird, Scintillant | Selasphorus scintilla | Ungraded | |
| Hummingbird, Scissor-tailed | Hylonympha macrocerca | Ungraded | |
| Hummingbird, Snowy-breasted | Amazilia edward | Ungraded | |
| Hummingbird, Sombre | Aphantochroa cirrochloris | Ungraded | |
| Hummingbird, Speckled | Adelomyia melanogenys | Ungraded | |
| Hummingbird, Steely-vented | Amazilia saucerrottei | Ungraded | |
| Hummingbird, Stripe-tailed | Eupherusa eximia | Ungraded | |
| Hummingbird, Swallow-tailed | Eupetomena macroura | Ungraded | |
| Hummingbird, Sword-billed | Ensifera ensifera | Ungraded | |
| Hummingbird, Vervain | Mellisuga minima | Ungraded | |
| Hummingbird, Violet-bellied | Damophila julie | Ungraded | |
| Hummingbird, Violet-crowned | Amazilia violiceps | Ungraded | |
| Hummingbird, Violet-headed | Klais guimeti | Ungraded | |
| Hummingbird, Volcano | Selasphorus flammula | Ungraded | |
| Hummingbird, Wedge-billed | Augastes geoffroyi | Ungraded | |
| Hummingbird, White-eared | Cynanthus lucotis | Ungraded | |
| Hummingbird, White-throated | Leucochloris albicollis | Ungraded | |
| Hummingbird, Xantus's | Basilinna xantusii | Ungraded | |
| Hummingbirds | Trochilidae | Ungraded | |
| Hwamei, Chinese | Garrulax canorus | Ungraded | |
| hybrid | | Ungraded | |
| Hyliota, Violet-backed | Hyliota violacea | Ungraded | |
| Hyliota, Yellow-bellied | Hyliota flavigaster | Ungraded | |
| Hypocolius, Grey | Hypocolius ampelinus | Ungraded | |
| Ibis sp. | Threskiornis sp. | Rare | |
| Ibis, Australian White | Threskiornis moluccus | Ungraded | |
| Ibis, Bald | Geronticus eremita | Ungraded | |
| Ibis, Bare-faced | Phimosus infuscatus | Ungraded | |
| Ibis, Black | Pseudibis papillosa | Ungraded | |
| Ibis, Black-faced | Theristicus melanopis | Ungraded | |
| Ibis, Black-headed | Threskiornis melanocephalus | Ungraded | |
| Ibis, Buff-necked | Theristicus caudatus | Ungraded | |
| Ibis, Crested | Nipponia nippon | Ungraded | |
| Ibis, Giant | Pseudibis gigantea | Ungraded | |
| Ibis, Glossy | Plegadis falcinellus | Scarce | |
| Ibis, Green | Mesembrinibis cayennensis | Ungraded | |
| Ibis, Hadada | Bostrychia hagedash | Ungraded | |
| Ibis, Plumbeous | Theristicus caerulescens | Ungraded | |
| Ibis, Puna | Plegadis ridgwayi | Ungraded | |
| Ibis, Sacred | Threskiornis aethiopicus | Ungraded | |
| Ibis, Scarlet | Eudocimus ruber | Ungraded | |
| Ibis, Sharp-tailed | Cercibis oxycerca | Ungraded | |
| Ibis, Southern Bald | Geronticus calvus | Ungraded | |
| Ibis, Straw-necked | Threskiornis spinicollis | Ungraded | |
| Ibis, Wattled | Bostrychia carunculata | Ungraded | |
| Ibis, White | Eudocimus albus | Ungraded | |
| Ibis, White-faced | Plegadis chihi | Ungraded | |
| Ibis, White-shouldered | Pseudibis davisoni | Ungraded | |
| Ibisbill | Ibidorhyncha struthersii | Ungraded | |
| Ibises and spoonbills | Threskiornithidae | Ungraded | |
| Illadopsis, Puvel's | Illadopsis puveli | Ungraded | |
| Inca, Bronzy | Coeligena coeligena | Ungraded | |
| Inca, Brown | Coeligena wilsoni | Ungraded | |
| Inca, Collared | Coeligena torquata | Ungraded | |
| Indigobird, Dusky | Vidua funerea | Ungraded | |
| Indigobird, Village | Vidua chalybeata | Ungraded | |
| Indigobird, Wilson's | Vidua wilsoni | Ungraded | |
| Inezia, Pale-tipped | Inezia caudata | Ungraded | |
| Iora, Common | Aegithina tiphia | Ungraded | |
| Iora, White-tailed | Aegithina nigrolutea | Ungraded | |
| Jabiru | Jabiru mycteria | Ungraded | |
| Jacamar, Bluish-fronted | Galbula cyanescens | Ungraded | |
| Jacamar, Bronzy | Galbula leucogastra | Ungraded | |
| Jacamar, Brown | Brachygalba lugubris | Ungraded | |
| Jacamar, Chestnut | Galbalcyrhynchus purusianus | Ungraded | |
| Jacamar, Coppery-chested | Galbula pastazae | Ungraded | |
| Jacamar, Great | Jacamerops aureus | Ungraded | |
| Jacamar, Green-tailed | Galbula galbula | Ungraded | |
| Jacamar, Pale-headed | Brachygalba goeringi | Ungraded | |
| Jacamar, Paradise | Galbula dea | Ungraded | |
| Jacamar, Purplish | Galbula chalcothorax | Ungraded | |
| Jacamar, Rufous-tailed | Galbula ruficauda | Ungraded | |
| Jacamar, Three-toed | Jacamaralcyon tridactyla | Ungraded | |
| Jacamar, White-chinned | Galbula tombacea | Ungraded | |
| Jacamar, Yellow-billed | Galbula albirostris | Ungraded | |
| Jacana, African | Actophilornis africanus | Ungraded | |
| Jacana, Bronze-winged | Metopidius indicus | Ungraded | |
| Jacana, Comb-crested | Irediparra gallinacea | Ungraded | |
| Jacana, Lesser | Microparra capensis | Ungraded | |
| Jacana, Madagascar | Actophilornis albinucha | Ungraded | |
| Jacana, Northern | Jacana spinosa | Ungraded | |
| Jacana, Pheasant-tailed | Hydrophasianus chirurgus | Ungraded | |
| Jacana, Wattled | Jacana jacana | Ungraded | |
| Jackdaw | Coloeus monedula | Common | |
| Jackdaw, Daurian | Coloeus dauuricus | Mega | |
| Jackdaw, Nordic | Corvus monedula monedula | Local | |
| Jacky Winter | Microeca fascinans | Ungraded | |
| Jacobin, Black | Melanotrochilus fuscus | Ungraded | |
| Jacobin, White-necked | Florisuga mellivora | Ungraded | |
| Jay | Garrulus glandarius | Common | |
| Jay, Azure | Cyanocorax caeruleus | Ungraded | |
| Jay, Black-chested | Cyanocorax affinis | Ungraded | |
| Jay, Black-headed | Garrulus lanceolatus | Ungraded | |
| Jay, Blue | Cyanocitta cristata | Ungraded | |
| Jay, Brown | Psilorhinus morio | Ungraded | |
| Jay, Florida Scrub- | Aphelocoma coerulescens | Ungraded | |
| Jay, Green | Cyanocorax luxuosus | Ungraded | |
| Jay, Grey | Perisoreus canadensis | Ungraded | |
| Jay, Inca | Cyanocorax yncas | Ungraded | |
| Jay, Lidth's | Garrulus lidthi | Ungraded | |
| Jay, Mexican | Aphelocoma ultramarina | Ungraded | |
| Jay, Pinyon | Gymnorhinus cyanocephalus | Ungraded | |
| Jay, Pleske's Ground- | Podoces pleskei | Ungraded | |
| Jay, Plush-crested | Cyanocorax chrysops | Ungraded | |
| Jay, Purplish | Cyanocorax cyanomelas | Ungraded | |
| Jay, San Blas | Cyanocorax sanblasianus | Ungraded | |
| Jay, Siberian | Perisoreus infaustus | Mega | |
| Jay, Steller's | Cyanocitta stelleri | Ungraded | |
| Jay, Tufted | Cyanocorax dickeyi | Ungraded | |
| Jay, Turkestan Ground- | Podoces panderi | Ungraded | |
| Jay, Turquoise | Cyanolyca turcosa | Ungraded | |
| Jay, Violaceous | Cyanocorax violaceus | Ungraded | |
| Jay, Western Scrub- | Aphelocoma californica | Ungraded | |
| Jay, White-tailed | Cyanocorax mystacalis | Ungraded | |
| Jay, White-throated Magpie | Calocitta formosa | Ungraded | |
| Jay, Yucatan | Cyanocorax yucatanicus | Ungraded | |
| Jery, Common | Neomixis tenella | Ungraded | |
| Jery, Stripe-throated | Neomixis striatigula | Ungraded | |
| Jewelfront, Gould's | Heliodoxa aurescens | Ungraded | |
| Junco, Dark-eyed | Junco hyemalis | Rare | |
| Junco, Volcano | Junco vulcani | Ungraded | |
| Junco, Yellow-eyed | Junco phaeonotus | Ungraded | |
| Junglefowl, Green | Gallus varius | Ungraded | |
| Junglefowl, Grey | Gallus sonneratii | Ungraded | |
| Junglefowl, Red | Gallus gallus | Ungraded | |
| Junglefowl, Sri Lanka | Gallus lafayetii | Ungraded | |
| Kagu | Rhynochetos jubatus | Ungraded | |
| Kaka, South Island | Nestor meridionalis | Ungraded | |
| Kakapo | Strigops habroptilus | Ungraded | |
| Kea | Nestor notabilis | Ungraded | |
| Kestrel, American | Falco sparverius | Mega | |
| Kestrel, Banded | Falco zoniventris | Ungraded | |
| Kestrel, Common | Falco tinnunculus | Common | |
| Kestrel, Dickinson's | Falco dickinsoni | Ungraded | |
| Kestrel, Fox | Falco alopex | Ungraded | |
| Kestrel, Greater | Falco rupicoloides | Ungraded | |
| Kestrel, Grey | Falco ardosiaceus | Ungraded | |
| Kestrel, Lesser | Falco naumanni | Mega | |
| Kestrel, Madagascar | Falco newtoni | Ungraded | |
| Kestrel, Mauritius | Falco punctatus | Ungraded | |
| Kestrel, Nankeen | Falco cenchroides | Ungraded | |
| Kestrel, Rock | Falco rupicolus | Ungraded | |
| Killdeer | Charadrius vociferus | Mega | |
| Kingbird, Cassin's | Tyrannus vociferans | Ungraded | |
| Kingbird, Couch's | Tyrannus couchii | Ungraded | |
| Kingbird, Eastern | Tyrannus tyrannus | Mega | |
| Kingbird, Giant | Tyrannus cubensis | Ungraded | |
| Kingbird, Grey | Tyrannus dominicensis | Ungraded | |
| Kingbird, Loggerhead | Tyrannus caudifasciatus | Ungraded | |
| Kingbird, Tropical | Tyrannus melancholicus | Ungraded | |
| Kingbird, Western | Tyrannus verticalis | Ungraded | |
| Kingbird, White-throated | Tyrannus albogularis | Ungraded | |
| Kingfisher Malagasy | Corythornis vintsioides | Ungraded | |
| Kingfisher sp. | Alcedinidae | Ungraded | |
| Kingfisher, African Pygmy- | Ispidina picta | Ungraded | |
| Kingfisher, Amazon | Chloroceryle amazona | Ungraded | |
| Kingfisher, American Pygmy | Chloroceryle aenea | Ungraded | |
| Kingfisher, Azure | Alcedo azurea | Ungraded | |
| Kingfisher, Banded | Lacedo pulchella | Ungraded | |
| Kingfisher, Belted | Megaceryle alcyon | Mega | |
| Kingfisher, Black-billed | Pelargopsis melanorhyncha | Ungraded | |
| Kingfisher, Black-capped | Halcyon pileata | Ungraded | |
| Kingfisher, Black-capped Paradise | Tanysiptera nigriceps | Ungraded | |
| Kingfisher, Blue-breasted | Halcyon malimbica | Ungraded | |
| Kingfisher, Blue-eared | Alcedo meninting | Ungraded | |
| Kingfisher, Brown-headed Paradise | Tanysiptera danae | Ungraded | |
| Kingfisher, Brown-hooded | Halcyon albiventris | Ungraded | |
| Kingfisher, Brown-winged | Pelargopsis amauroptera | Ungraded | |
| Kingfisher, Cerulean | Alcedo coerulescens | Ungraded | |
| Kingfisher, Chocolate-backed | Halcyon badia | Ungraded | |
| Kingfisher, Collared | Todiramphus chloris | Ungraded | |
| Kingfisher, Common | Alcedo atthis | Common | |
| Kingfisher, Common Paradise | Tanysiptera galatea | Ungraded | |
| Kingfisher, Crested | Megaceryle lugubris | Ungraded | |
| Kingfisher, Dwarf | Ispidina lecontei | Ungraded | |
| Kingfisher, Forest | Todiramphus macleayii | Ungraded | |
| Kingfisher, Giant | Megaceryle maxima | Ungraded | |
| Kingfisher, Green | Chloroceryle americana | Ungraded | |
| Kingfisher, Green-and-rufous | Chloroceryle inda | Ungraded | |
| Kingfisher, Grey-headed | Halcyon leucocephala | Ungraded | |
| Kingfisher, Half-collared | Alcedo semitorquata | Ungraded | |
| Kingfisher, Little | Alcedo pusilla | Ungraded | |
| Kingfisher, Little Paradise- | Tanysiptera hydrocharis | Ungraded | |
| Kingfisher, Madagascar Pygmy | Corythornis madagascariensis | Ungraded | |
| Kingfisher, Malachite | Corythornis cristatus | Ungraded | |
| Kingfisher, Mangrove | Halcyon senegaloides | Ungraded | |
| Kingfisher, Pied | Ceryle rudis | Ungraded | |
| Kingfisher, Principe | Corythornis nais | Ungraded | |
| Kingfisher, Red-backed | Todiramphus pyrrhopygia | Ungraded | |
| Kingfisher, Ringed | Megaceryle torquata | Ungraded | |
| Kingfisher, Ruddy | Halcyon coromanda | Ungraded | |
| Kingfisher, Rufous-backed | Ceyx erithaca rufidorsa | Ungraded | |
| Kingfisher, Rufous-collared | Actenoides concretus | Ungraded | |
| Kingfisher, Sacred | Todiramphus sanctus | Ungraded | |
| Kingfisher, Sao Tome | Corythornis thomensis | Ungraded | |
| Kingfisher, Shining-blue | Alcedo quadribrachys | Ungraded | |
| Kingfisher, Silvery | Ceyx argentatus | Ungraded | |
| Kingfisher, Spotted Wood | Actenoides lindsayi | Ungraded | |
| Kingfisher, Stork-billed | Pelargopsis capensis | Ungraded | |
| Kingfisher, Striped | Halcyon chelicuti | Ungraded | |
| Kingfisher, White-bellied | Corythornis leucogaster | Ungraded | |
| Kingfisher, White-breasted | Halcyon smyrnensis | Ungraded | |
| Kingfisher, Woodland | Halcyon senegalensis | Ungraded | |
| Kingfisher, Yellow-billed | Syma torotoro | Ungraded | |
| Kinglet, Golden-crowned | Regulus satrapa | Ungraded | |
| Kinglet, Ruby-crowned | Regulus calendula | Mega | |
| Kiskadee, Great | Pitangus sulphuratus | Ungraded | |
| Kiskadee, Lesser | Philohydor lictor | Ungraded | |
| Kite sp. | Milvus | Scarce | |
| Kite, Black | Milvus migrans | Scarce | |
| Kite, Black-eared | Milvus migrans lineatus | Mega | |
| Kite, Black-shouldered | Elanus axillaris | Ungraded | |
| Kite, Black-winged | Elanus caeruleus | Mega | |
| Kite, Brahminy | Haliastur indus | Ungraded | |
| Kite, Double-toothed | Harpagus bidentatus | Ungraded | |
| Kite, Grey-headed | Leptodon cayanensis | Ungraded | |
| Kite, Hook-billed | Chondrohierax uncinatus | Ungraded | |
| Kite, Mississippi | Ictinia mississippiensis | Ungraded | |
| Kite, Pearl | Gampsonyx swainsonii | Ungraded | |
| Kite, Plumbeous | Ictinia plumbea | Ungraded | |
| Kite, Red | Milvus milvus | Local | |
| Kite, Slender-billed | Helicolestes hamatus | Ungraded | |
| Kite, Snail | Rostrhamus sociabilis | Ungraded | |
| Kite, Swallow-tailed | Elanoides forficatus | Mega | |
| Kite, Whistling | Haliastur sphenurus | Ungraded | |
| Kite, White-tailed | Elanus leucurus | Ungraded | |
| Kite, Yellow-billed | Milvus aegyptius | Ungraded | |
| Kites, Hawks & Eagles | Accipitridae | Ungraded | |
| Kittiwake | Rissa tridactyla | Local | |
| Kittiwake, Red-legged | Rissa brevirostris | Ungraded | |
| Kiwi, Brown | Apteryx australis | Ungraded | |
| Knot | Calidris canutus | Common | |
| Knot, Great | Calidris tenuirostris | Mega | |
| Koel, Black-billed | Eudynamys melanorhynchus | Ungraded | |
| Koel, Common | Eudynamys scolopaceus | Ungraded | |
| Kokako, North Island | Callaeas wilsoni | Ungraded | |
| Kokako, South Island | Callaeas cinereus | Ungraded | |
| Kookaburra, Blue-winged | Dacelo leachii | Ungraded | |
| Kookaburra, Laughing | Dacelo novaeguineae | Ungraded | |
| Korhaan, Karoo | Eupodotis vigorsii | Ungraded | |
| Korhaan, Northern Black | Afrotis afraoides | Ungraded | |
| Korhaan, Red-crested | Eupodotis ruficrista | Ungraded | |
| Korhaan, Rüppell's | Eupodotis rueppelii | Ungraded | |
| Korhaan, Southern Black | Eupodotis afra | Ungraded | |
| Lammergeier | Gypaetus barbatus | Ungraded | |
| Lancebill, Green-fronted | Doryfera ludovicae | Ungraded | |
| Lapwing | Vanellus vanellus | Common | |
| Lapwing, Andean | Vanellus resplendens | Ungraded | |
| Lapwing, Black-headed | Vanellus tectus | Ungraded | |
| Lapwing, Blacksmith | Vanellus armatus | Ungraded | |
| Lapwing, Black-winged | Vanellus melanopterus | Ungraded | |
| Lapwing, Crowned | Vanellus coronatus | Ungraded | |
| Lapwing, Grey-headed | Vanellus cinereus | Ungraded | |
| Lapwing, Long-toed | Vanellus crassirostris | Ungraded | |
| Lapwing, Masked | Vanellus miles | Ungraded | |
| Lapwing, Red-wattled | Vanellus indicus | Ungraded | |
| Lapwing, River | Vanellus duvaucelii | Ungraded | |
| Lapwing, Senegal | Vanellus lugubris | Ungraded | |
| Lapwing, Sociable | Vanellus gregarius | Mega | |
| Lapwing, Southern | Vanellus chilensis | Ungraded | |
| Lapwing, Spot-breasted | Vanellus melanocephalus | Ungraded | |
| Lapwing, Wattled | Vanellus senegallus | Ungraded | |
| Lapwing, White-headed | Vanellus albiceps | Ungraded | |
| Lapwing, Yellow-wattled | Vanellus malabaricus | Ungraded | |
| lark sp. | Alaudidae | Ungraded | |
| Lark, Ashy-crowned Sparrow- | Eremopterix grisea | Ungraded | |
| Lark, Asian Short-toed | Calandrella cheleensis | Ungraded | |
| Lark, Barlow's | Calendulauda barlowi | Ungraded | |
| Lark, Bar-tailed | Ammomanes cinctura | Ungraded | |
| Lark, Beesley's | Chersomanes beesleyi | Ungraded | |
| Lark, Bimaculated | Melanocorypha bimaculata | Mega | |
| Lark, Black | Melanocorypha yeltoniensis | Mega | |
| Lark, Black-crowned Sparrow- | Eremopterix nigriceps | Ungraded | |
| Lark, Calandra | Melanocorypha calandra | Mega | |
| Lark, Cape Long-billed | Certhilauda curvirostris | Ungraded | |
| Lark, Chestnut-backed Sparrow- | Eremopterix leucotis | Ungraded | |
| Lark, Chestnut-headed Sparrow- | Eremopterix signatus | Ungraded | |
| Lark, Crested | Galerida cristata | Mega | |
| Lark, Desert | Ammomanes deserti | Mega | |
| Lark, Dune | Certhilauda erythrochlamys | Ungraded | |
| Lark, Dunn's | Eremalauda dunni | Ungraded | |
| Lark, Dupont's | Chersophilus duponti | Mega | |
| Lark, Fawn-colored | Calendulauda africanoides | Ungraded | |
| Lark, Flappet | Mirafra rufocinnamomea | Ungraded | |
| Lark, Gray's | Ammomanopsis grayi | Ungraded | |
| Lark, Hoopoe | Alaemon alaudipes | Ungraded | |
| Lark, Hume's | Calandrella acutirostris | Ungraded | |
| Lark, Jerdon's Bush | Mirafra affinis | Ungraded | |
| Lark, Karoo | Certhilauda albescens | Ungraded | |
| Lark, Karoo Long-billed | Certhilauda subcoronata | Ungraded | |
| Lark, Lesser Short-toed | Calandrella rufescens | Mega | |
| Lark, Madagascar | Mirafra hova | Ungraded | |
| Lark, Maghreb | Galerida macrorhyncha | Ungraded | |
| Lark, Magpie- | Grallina cyanoleuca | Ungraded | |
| Lark, Malabar | Galerida malabarica | Ungraded | |
| Lark, Mongolian | Melanocorypha mongolica | Ungraded | |
| Lark, North American Horned | Eremophila alpestris alpestris | Ungraded | |
| Lark, Pink-breasted | Calendulauda poecilosterna | Ungraded | |
| Lark, Razo | Alauda razae | Ungraded | |
| Lark, Red | Calendulauda burra | Ungraded | |
| Lark, Red-capped | Calandrella Cinerea | Ungraded | |
| Lark, Red-winged | Mirafra hypermetra | Ungraded | |
| Lark, Rufous-naped | Mirafra africana | Ungraded | |
| Lark, Rufous-tailed | Ammomanes phoenicurus | Ungraded | |
| Lark, Sabota | Mirafra sabota | Ungraded | |
| Lark, Sand | Calandrella raytal | Ungraded | |
| Lark, Sclater's | Spizocorys sclateri | Ungraded | |
| Lark, Shore | Eremophila alpestris | Local | |
| Lark, Short-toed | Calandrella brachydactyla | Scarce | |
| Lark, Sidamo | Heteromirafra sidamoensis | Ungraded | |
| Lark, Sky | Alauda arvensis | Common | |
| Lark, Small Sky | Alauda gulgula | Ungraded | |
| Lark, Spike-heeled | Chersomanes albofasciata | Ungraded | |
| Lark, Sun | Galerida modesta | Ungraded | |
| Lark, Sykes's | Galerida deva | Ungraded | |
| Lark, Temminck's Horned | Eremophila bilopha | Ungraded | |
| Lark, Thekla | Galerida theklae | Mega | |
| Lark, Thick-billed | Ramphocoris clotbey | Ungraded | |
| Lark, Tibetan | Melanocorypha maxima | Ungraded | |
| Lark, White-winged | Melanocorypha leucoptera | Mega | |
| Lark, Wood | Lullula arborea | Local | |
| Laughingthrush, Ashy-headed | Garrulax cinereifrons | Ungraded | |
| Laughingthrush, Bhutan | Garrulax imbricatus | Ungraded | |
| Laughingthrush, Black-chinned | Trochalopteron cachinnans | Ungraded | |
| Laughingthrush, Black-faced | Garrulax affinis | Ungraded | |
| Laughingthrush, Blue-winged | Garrulax squamatus | Ungraded | |
| Laughingthrush, Chestnut-capped | Garrulax mitratus | Ungraded | |
| Laughingthrush, Chestnut-crowned | Garrulax erythrocephalus | Ungraded | |
| Laughingthrush, Elliot's | Garrulax elliotii | Ungraded | |
| Laughingthrush, Greater Necklaced | Garrulax pectoralis | Ungraded | |
| Laughingthrush, Kerala | Trochalopteron fairbanki | Ungraded | |
| Laughing-thrush, Masked | Garrulax perspicillatus | Ungraded | |
| Laughing-thrush, Red-winged | Garrulax formosus | Ungraded | |
| Laughingthrush, Rufous-chinned | Garrulax rufogularis | Ungraded | |
| Laughingthrush, Spot-breasted | Garrulax merulinus | Ungraded | |
| Laughingthrush, Streaked | Garrulax lineatus | Ungraded | |
| Laughingthrush, Striated | Garrulax striatus | Ungraded | |
| Laughingthrush, White-browed | Garrulax sannio | Ungraded | |
| Laughingthrush, White-crested | Garrulax leucolophus | Ungraded | |
| Laughingthrush, White-throated | Garrulax albogularis | Ungraded | |
| Laughingthrush, White-whiskered | Trochalepteron morrisonianum | Ungraded | |
| Leaf Warbler, Pale-legged/Sakhalin | Phylloscopus tenellipes/borealoides | Mega | |
| Leafbird, Blue-winged | Chloropsis cochinchinensis | Ungraded | |
| Leafbird, Golden-fronted | Chloropsis aurifrons | Ungraded | |
| Leafbird, Orange-bellied | Chloropsis hardwickii | Ungraded | |
| Leafbird, Yellow-throated | Chloropsis palawanensis | Ungraded | |
| Leaflove, Yellow-throated | Atimastillas flavicollis | Ungraded | |
| Leaftosser, Grey-throated | Sclerurus albigularis | Ungraded | |
| Leiothrix, Red-billed | Leiothrix lutea | Ungraded | |
| Limpkin | Aramus guarauna | Ungraded | |
| Linnet | Carduelis cannabina | Common | |
| Linnet, Yemeni | Carduelis yemenensis | Ungraded | |
| Liocichla, Red-faced | Liocichla phoenicea | Ungraded | |
| Liocichla, Steere's | Liocichla steerii | Ungraded | |
| Locustella sp. | Locustella sp. | Ungraded | |
| Logrunner, Southern | Orthonyx temminckii | Ungraded | |
| Longclaw, Abyssinian | Macronyx flavicollis | Ungraded | |
| Longclaw, Cape | Macronyx capensis | Ungraded | |
| Longclaw, Pangani | Macronyx aurantiigula | Ungraded | |
| Longclaw, Rosy-breasted | Macronyx ameliae | Ungraded | |
| Longclaw, Sharpe's | Macronyx sharpei | Ungraded | |
| Longclaw, Yellow-throated | Macronyx croceus | Ungraded | |
| Longspur, Smith's | Calcarius pictus | Ungraded | |
| Lorikeet, Musk | Glossopsitta concinna | Ungraded | |
| Lorikeet, Papuan | Charmosyna papou | Ungraded | |
| Lorikeet, Purple-crowned | Glossopsitta porphyrocephala | Ungraded | |
| Lorikeet, Rainbow | Trichoglossus haematodus | Ungraded | |
| Lorikeet, Rainbow | Trichoglossus moluccanus | Ungraded | |
| Lorikeet, Red-collared | Trichoglossus rubritorquis | Ungraded | |
| Lorikeet, Scaly-breasted | Trichoglossus chlorolepidotus | Ungraded | |
| Lory, Purple-bellied | Lorius hypoinochrous | Ungraded | |
| Lovebird, Black-winged | Agapornis taranta | Ungraded | |
| Lovebird, Fischer's | Agapornis fischeri | Ungraded | |
| Lovebird, Grey-headed | Agapornis canus | Ungraded | |
| Lovebird, Rosy-faced | Agapornis roseicollis | Ungraded | |
| Lovebird, Yellow-collared | Agapornis swindernianus | Ungraded | |
| Lovebird, Yellow-collared | Agapornis personatus | Ungraded | |
| Lyrebird, Superb | Menura novaehollandiae | Ungraded | |
| Macaw, Blue-and-yellow | Ara ararauna | Ungraded | |
| Macaw, Chestnut-fronted | Ara severus | Ungraded | |
| Macaw, Golden-collared | Primolius auricollis | Ungraded | |
| Macaw, Great Green | Ara ambiguus | Ungraded | |
| Macaw, Hyacinth | Anodorhynchus hyacinthinus | Ungraded | |
| Macaw, Lear's | Anodorhynchus leari | Ungraded | |
| Macaw, Military | Ara militaris | Ungraded | |
| Macaw, Red-and-green | Ara chloropterus | Ungraded | |
| Macaw, Red-fronted | Ara rubrogenys | Ungraded | |
| Macaw, Red-shouldered | Diopsittaca nobilis | Ungraded | |
| Macaw, Scarlet | Ara macao | Ungraded | |
| Magpie | Pica pica | Common | |
| Magpie, Australian | Gymnorhina tibicen | Ungraded | |
| Magpie, Azure-winged | Cyanopica cyanus | Ungraded | |
| Magpie, Black | Platysmurus leucopterus | Ungraded | |
| Magpie, Black-billed | Pica hudsonia | Ungraded | |
| Magpie, Common Green | Cissa chinensis | Ungraded | |
| Magpie, Formosan | Urocissa caerulea | Ungraded | |
| Magpie, Iberian | Cyanopica cooki | Ungraded | |
| Magpie, Red-billed Blue | Urocissa erythrorhyncha | Ungraded | |
| Magpie, Sri Lanka | Urocissa ornata | Ungraded | |
| Magpie, Yellow-billed | Pica nuttalli | Ungraded | |
| Magpie, Yellow-billed Blue | Urocissa flavirostris | Ungraded | |
| Maleo | Macrocephalon maleo | Ungraded | |
| Malimbe, Blue-billed | Malimbus nitens | Ungraded | |
| Malimbe, Crested | Malimbus malimbicus | Ungraded | |
| Malimbe, Red-headed | Malimbus rubricollis | Ungraded | |
| Malkoha, Blue | Ceuthmochares aereus | Ungraded | |
| Malkoha, Blue-faced | Phaenicophaeus viridirostris | Ungraded | |
| Malkoha, Chestnut-bellied | Phaenicophaeus sumatranus | Ungraded | |
| Malkoha, Chestnut-breasted | Phaenicophaeus curvirostris | Ungraded | |
| Malkoha, Green-billed | Phaenicophaeus tristis | Ungraded | |
| Malkoha, Raffles's | Rhinortha chlorophaea | Ungraded | |
| Malkoha, Red-billed | Phaenicophaeus javanicus | Ungraded | |
| Malkoha, Red-faced | Phaenicophaeus pyrrhocephalus | Ungraded | |
| Malkoha, Sirkeer | Phaenicophaeus leschenaultii | Ungraded | |
| Mallard | Anas platyrhynchos | Common | |
| Malleefowl | Leipoa ocellata | Ungraded | |
| Manakin, Araripe | Antilophia bokermanni | Ungraded | |
| Manakin, Band-tailed | Pipra fasciicauda | Ungraded | |
| Manakin, Blue | Chiroxiphia caudata | Ungraded | |
| Manakin, Blue-backed | Chiroxiphia pareola | Ungraded | |
| Manakin, Club-winged | Machaeropterus deliciosus | Ungraded | |
| Manakin, Eastern Striped | Machaeropterus regulus | Ungraded | |
| Manakin, Fiery-capped | Machaeropterus pyrocephalus | Ungraded | |
| Manakin, Golden-headed | Pipra erythrocephala | Ungraded | |
| Manakin, Golden-winged | Masius chrysopterus | Ungraded | |
| Manakin, Helmeted | Antilophia galeata | Ungraded | |
| Manakin, Long-tailed | Chiroxiphia linearis | Ungraded | |
| Manakin, Orange-collared | Manacus aurantiacus | Ungraded | |
| Manakin, Pin-tailed | Ilicura militaris | Ungraded | |
| Manakin, Red-capped | Dixiphia mentalis | Ungraded | |
| Manakin, White-bearded | Manacus manacus | Ungraded | |
| Manakin, White-collared | Manacus candei | Ungraded | |
| Manakin, White-crowned | Pipra pipra | Ungraded | |
| Manakin, White-ruffed | Corapipo altera | Ungraded | |
| Manakin, White-throated | Corapipo gutturalis | Ungraded | |
| Manakin, Wire-tailed | Pipra filicauda | Ungraded | |
| Maned, Owl, | Jubula lettii | Ungraded | |
| Mango, Antillean | Anthracothorax dominicus | Ungraded | |
| Mango, Black-throated | Anthracothorax nigricollis | Ungraded | |
| Mango, Green | Anthracothorax viridis | Ungraded | |
| Mango, Green-breasted | Anthracothorax prevostii | Ungraded | |
| Mango, Green-throated | Anthracothorax viridigula | Ungraded | |
| Mango, Jamaican | Anthracothorax mango | Ungraded | |
| Mango, Veraguan | Anthracothorax veraguensis | Ungraded | |
| Mannikin, Black and White | Lonchura bicolor | Ungraded | |
| Mannikin, Bronze | Lonchura cucullata | Ungraded | |
| Mannikin, Hooded | Lonchura spectabilis | Ungraded | |
| Mannikin, Madagascar | Lonchura nana | Ungraded | |
| Mannikin, Magpie | Lonchura fringilloides | Ungraded | |
| Marshbird, Brown-and-yellow | Pseudoleistes virescens | Ungraded | |
| Marshbird, Yellow-rumped | Pseudoleistes guirahuro | Ungraded | |
| Martin, African Rock | Ptyonoprogne fuligula | Ungraded | |
| Martin, Asian House | Delichon dasypus | Ungraded | |
| Martin, Banded | Riparia cincta | Ungraded | |
| Martin, Brown-chested | Phaeoprogne tapera | Ungraded | |
| Martin, Brown-throated Sand | Riparia paludicola | Ungraded | |
| Martin, Caribbean | Progne dominicensis | Ungraded | |
| Martin, Cuban | Progne cryptoleuca | Ungraded | |
| Martin, Dusky Crag- | Hirundo concolor | Ungraded | |
| Martin, Eurasian Crag | Ptyonoprogne rupestris | Mega | |
| Martin, Fairy | Petrochelidon ariel | Ungraded | |
| Martin, Galapagos | Progne modesta | Ungraded | |
| Martin, Grey-breasted | Progne chalybea | Ungraded | |
| Martin, House | Delichon urbicum | Common | |
| Martin, Mascarene | Phedina borbonica | Ungraded | |
| Martin, Pale Crag | Ptyonoprogne obsoleta | Ungraded | |
| Martin, Pale Sand | Riparia diluta | Ungraded | |
| Martin, Purple | Progne subis | Mega | |
| Martin, Sand | Riparia riparia | Common | |
| Martin, Southern | Progne elegans | Ungraded | |
| Martin, Tree | Petrochelidon nigricans | Ungraded | |
| Meadowlark, Eastern | Sturnella magna | Ungraded | |
| Meadowlark, Long-tailed | Sturnella loyca | Ungraded | |
| Meadowlark, Western | Sturnella neglecta | Ungraded | |
| Megapode, Dusky | Megapodius freycinet | Ungraded | |
| Megapode, Melanesian | Megapodius eremita | Ungraded | |
| Melidectes, Belford's | Melidectes belfordi | Ungraded | |
| Melidectes, Ornate | Melidectes torquatus | Ungraded | |
| Merganser, Brazilian | Mergus octosetaceus | Ungraded | |
| Merganser, Common (ssp. americanus) | Mergus merganser americanus | Ungraded | |
| Merganser, Hooded | Lophodytes cucullatus | Ungraded | |
| Merganser, Red-breasted | Mergus serrator | Common | |
| Merganser, Scaly-sided | Mergus squamatus | Ungraded | |
| Merlin | Falco columbarius | Local | |
| Merlin, American | Falco columbarius columbarius | Mega | |
| Mesia, Silver-eared | Leiothrix argentauris | Ungraded | |
| Mesite, Subdesert | Monias benschi | Ungraded | |
| Metaltail, Tyrian | Metallura tyrianthina | Ungraded | |
| Meves's Starling | Lamprotornis mevesii | Ungraded | |
| Miner, Bell | Manorina melanophrys | Ungraded | |
| Miner, Noisy | Manorina melanocephala | Ungraded | |
| Miner, Rufous-banded | Geositta rufipennis | Ungraded | |
| Minivet, Ashy | Pericrocotus divaricatus | Ungraded | |
| Minivet, Fiery | Pericrocotus igneus | Ungraded | |
| Minivet, Grey-chinned | Pericrocotus solaris | Ungraded | |
| Minivet, Little | Pericrocotus lansbergei | Ungraded | |
| Minivet, Long-tailed | Pericrocotus ethologus | Ungraded | |
| Minivet, Scarlet | Pericrocotus speciosus | Ungraded | |
| Minivet, Small | Pericrocotus cinnamomeus | Ungraded | |
| Minivet, Swinhoe's | Pericrocotus cantonensis | Ungraded | |
| Minivet, White-bellied | Pericrocotus erythropygius | Ungraded | |
| Minla, Blue-winged | Minla cyanouroptera | Ungraded | |
| Minla, Chestnut-tailed | Minla strigula | Ungraded | |
| Minla, Red-tailed | Minla ignotincta | Ungraded | |
| Mistletoebird | Dicaeum hirundinaceum | Ungraded | |
| Mockingbird, Bahama | Mimus gundlachii | Ungraded | |
| Mockingbird, Blue | Melanotis caerulescens | Ungraded | |
| Mockingbird, Chalk-browed | | Ungraded | |
| Mockingbird, Charles | Mimus trifasciatus | Ungraded | |
| Mockingbird, Galapagos | Nesomimus parvulus | Ungraded | |
| Mockingbird, Hood | Nesomimus macdonaldi | Ungraded | |
| Mockingbird, Long-tailed | Mimus longicaudatus | Ungraded | |
| Mockingbird, Northern | Mimus polyglottos | Mega | |
| Mockingbird, Patagonian | Mimus patagonicus | Ungraded | |
| Mockingbird, San Cristobal | Mimus melanotis | Ungraded | |
| Mockingbird, Tropical | Mimus gilvus | Ungraded | |
| Mockingbird, White-banded | Mimus triurus | Ungraded | |
| Monal, Himalayan | Lophophorus impejanus | Ungraded | |
| Monal, Sclater's | Lophophorus sclateri | Ungraded | |
| Monarch, Black-faced | Monarcha melanopsis | Ungraded | |
| Monarch, Black-naped | Hypothymis azurea | Ungraded | |
| Monarch, Pied | Arses kaupi | Ungraded | |
| Monarch, Rarotonga | Pomarea dimidiata | Ungraded | |
| Monarch, Slaty | Mayrornis lessoni | Ungraded | |
| Monarch, Spectacled | Symposiachrus trivirgatus | Ungraded | |
| Monjita, Grey | Xolmis cinereus | Ungraded | |
| Monjita, White | Xolmis irupero | Ungraded | |
| Monjita, White-rumped | Xolmis velata | Ungraded | |
| Monklet, Lanceolated | Micromonacha lanceolata | Ungraded | |
| Moorhen | Gallinula chloropus | Common | |
| Moorhen, Dusky | Gallinula tenebrosa | Ungraded | |
| Moorhen, Laughing | Gallinula chloropus cachinnans | Ungraded | |
| Moorhen, Lesser | Gallinula angulata | Ungraded | |
| Morepork | Ninox novaeseelandiae | Ungraded | |
| Motmot, Blue-crowned | Momotus momota | Ungraded | |
| Motmot, Blue-diademed | Momotus lessonii | Ungraded | |
| Motmot, Broad-billed | Electron platyrhynchum | Ungraded | |
| Motmot, Highland | Momotus aequatorialis | Ungraded | |
| Motmot, Rufous | Baryphthengus martii | Ungraded | |
| Motmot, Russet-crowned | Momotus mexicanus | Ungraded | |
| Motmot, Tody | Hylomanes momotula | Ungraded | |
| Motmot, Trinidad | Momotus bahamensis | Ungraded | |
| Motmot, Turquoise-browed | Eumomota superciliosa | Ungraded | |
| Motmot, Whooping | Momotus subrufescens | Ungraded | |
| Mountaineer, Bearded | Oreonympha nobilis | Ungraded | |
| Mountaingem, Grey-tailed | Lampornis cinereicauda | Ungraded | |
| Mountain-gem, Purple-throated | Lampornis calolaema | Ungraded | |
| Mountain-gem, White-throated | Lampornis castaneoventris | Ungraded | |
| Mountain-grackle, Golden-tufted | Macroagelaius imthurni | Ungraded | |
| Mourner, Rufous | Rhytipterna holerythra | Ungraded | |
| Mousebird, Blue-naped | Urocolius macrourus | Ungraded | |
| Mousebird, Red-faced | Urocolius indicus | Ungraded | |
| Mousebird, Speckled | Colius striatus | Ungraded | |
| Mousebird, White-headed | Colius leucocephalus | Ungraded | |
| Munia, Black-headed | Lonchura malacca | Ungraded | |
| Munia, Chestnut | Lonchura atricapilla | Ungraded | |
| Munia, Dusky | Lonchura fuscans | Ungraded | |
| Munia, Scaly-breasted | Lonchura punctulata | Ungraded | |
| Munia, White-rumped | Lonchura striata | Ungraded | |
| Murrelet sp. | Synthliboramphus | Ungraded | |
| Murrelet, Ancient | Synthliboramphus antiquus | Mega | |
| Murrelet, Japanese | Synthliboramphus wumizusume | Ungraded | |
| Murrelet, Kittlitz's | Brachyramphus brevirostris | Ungraded | |
| Murrelet, Long-billed | Brachyramphus perdix | Mega | |
| Murrelet, Marbled | Brachyramphus marmoratus | Ungraded | |
| Myiagra, Broad-billed | Myiagra ruficollis | Ungraded | |
| Myna, Bank | Acridotheres ginginianus | Ungraded | |
| Myna, Collared | Acridotheres albocinctus | Ungraded | |
| Myna, Common | Acridotheres tristis | Ungraded | |
| Myna, Crested | Acridotheres cristatellus | Ungraded | |
| Myna, Hill | Gracula religiosa | Ungraded | |
| Myna, Jungle | Acridotheres fuscus | Ungraded | |
| Myna, Long-tailed | Mino kreffti | Ungraded | |
| Myna, Southern Hill | Gracula indica | Ungraded | |
| Myna, White-vented | Acridotheres javanicus | Ungraded | |
| Myna, White-vented | Acridotheres grandis | Ungraded | |
| Myna, Yellow-faced | Mino dumontii | Ungraded | |
| Myzomela, Dusky | Myzomela obscura | Ungraded | |
| Myzomela, Sulphur-breasted | Myzomela jugularis | Ungraded | |
| Nativehen, Tasmanian | Tribonyx mortierii | Ungraded | |
| Needletail, Brown-backed | Hirundapus giganteus | Ungraded | |
| Needletail, White-throated | Hirundapus caudacutus | Mega | |
| Negrito, Andean | Lessonia oreas | Ungraded | |
| Negrito, Patagonian | Lessonia rufa | Ungraded | |
| Newtonia, Archbold's | Newtonia archboldi | Ungraded | |
| Newtonia, Common | Newtonia brunneicauda | Ungraded | |
| Newtonia, Red-tailed | Newtonia fanovanae | Ungraded | |
| Nicator, Western | Nicator chloris | Ungraded | |
| Nighthawk, Common | Chordeiles minor | Mega | |
| Nighthawk, Lesser | Chordeiles acutipennis | Ungraded | |
| Nighthawk, Nacunda | Chordeiles nacunda | Ungraded | |
| Nightingale | Luscinia megarhynchos | Local | |
| Nightingale, Common/Thrush | Luscinia megarhynchos/luscinia | Ungraded | |
| Nightingale, Eastern | Luscinia megarhynchos golzii | Mega | |
| Nightingale, Thrush | Luscinia luscinia | Rare | |
| Nightingale-Thrush, Black-headed | Catharus mexicanus | Ungraded | |
| Nightingale-Thrush, Orange-billed | Catharus aurantiirostris | Ungraded | |
| Nightingale-Thrush, Ruddy-capped | Catharus frantzii | Ungraded | |
| Nightjar | Caprimulgus europaeus | Local | |
| Nightjar sp. | Caprimulgidae sp. | Rare | |
| Nightjar, Anthony's | Caprimulgus anthonyi | Ungraded | |
| Nightjar, Band-winged | Caprimulgus longirostris | Ungraded | |
| Nightjar, Barred Owlet- | Aegotheles bennettii | Ungraded | |
| Nightjar, Blackish | Caprimulgus nigrescens | Ungraded | |
| Nightjar, Collared | Caprimulgus enarratus | Ungraded | |
| Nightjar, Donaldson-Smith's | Caprimulgus donaldsoni | Ungraded | |
| Nightjar, Dusky | Antrostomus saturatus | Ungraded | |
| Nightjar, Egyptian | Caprimulgus aegyptius | Mega | |
| Nightjar, Golden | Caprimulgus eximius | Ungraded | |
| Nightjar, Grey | Caprimulgus indicus | Ungraded | |
| Nightjar, Indian | Caprimulgus asiaticus | Ungraded | |
| Nightjar, Jerdon's | Caprimulgus atripennis | Ungraded | |
| Nightjar, Ladder-tailed | Hydropsalis climacocerca | Ungraded | |
| Nightjar, Large-tailed | Caprimulgus macrurus | Ungraded | |
| Nightjar, Long-tailed | Caprimulgus climacurus | Ungraded | |
| Nightjar, Lyre-tailed | Uropsalis lyra | Ungraded | |
| Nightjar, Madagascar | Caprimulgus madagascariensis | Ungraded | |
| Nightjar, Montane | Caprimulgus poliocephalus | Ungraded | |
| Nightjar, Nubian | Caprimulgus nubicus | Ungraded | |
| Nightjar, Plain | Caprimulgus inornatus | Ungraded | |
| Nightjar, Red-necked | Caprimulgus ruficollis | Mega | |
| Nightjar, Rufous | Caprimulgus rufus | Ungraded | |
| Nightjar, Savanna | Caprimulgus affinis | Ungraded | |
| Nightjar, Scissor-tailed | Hydropsalis brasiliana | Ungraded | |
| Nightjar, Slender-tailed | caprimulgus clarus | Ungraded | |
| Nightjar, Square-tailed | Caprimulgus fossii | Ungraded | |
| Nightjar, Standard-winged | Macrodipteryx longipennis | Ungraded | |
| Nightjar, Star-spotted | Caprimulgus stellatus | Ungraded | |
| Nightjar, Swallow-tailed | Uropsalis segmentata | Ungraded | |
| Nightjar, Swamp | Caprimulgus natalensis | Ungraded | |
| Nightjar, Sykes's | Caprimulgus mahrattensis | Ungraded | |
| Nightjar, White-tailed | Caprimulgus cayennensis | Ungraded | |
| Nightjar, White-throated | Eurostopodus mystacalis | Ungraded | |
| Nightjar, White-winged | Caprimulgus candicans | Ungraded | |
| Nigrita, Grey-headed | Nigrita canicapillus | Ungraded | |
| Nigrita, Pale-fronted | Nigrita luteifrons | Ungraded | |
| Niltava, Large | Niltava grandis | Ungraded | |
| Niltava, Rufous-bellied | Niltava sundara | Ungraded | |
| Niltava, Small | Niltava macgrigoriae | Ungraded | |
| Noddy, Black | Anous minutus | Ungraded | |
| Noddy, Brown | Anous stolidus | Ungraded | |
| Noddy, Lesser | Anous tenuirostris | Ungraded | |
| Nothura, Spotted | Nothura maculosa | Ungraded | |
| Nunbird, Black | | Ungraded | |
| Nunbird, Black-fronted | Monasa nigrifrons | Ungraded | |
| Nunbird, White-faced | Hapaloptila castanea | Ungraded | |
| Nunbird, White-fronted | Monasa morphoeus | Ungraded | |
| Nunlet, Rufous-capped | Nonnula ruficapilla | Ungraded | |
| Nutcracker | Nucifraga caryocatactes | Mega | |
| Nutcracker, Clark's | Nucifraga columbiana | Ungraded | |
| Nuthatch | Sitta europaea | Common | |
| Nuthatch, Algerian | Sitta ledanti | Ungraded | |
| Nuthatch, Brown-headed | Sitta pusilla | Ungraded | |
| Nuthatch, Chestnut-bellied | Sitta castanea | Ungraded | |
| Nuthatch, Chestnut-vented | Sitta nagaensis | Ungraded | |
| Nuthatch, Chinese | Sitta villosa | Ungraded | |
| Nuthatch, Corsican | Sitta whiteheadi | Ungraded | |
| Nuthatch, Eastern Rock | Sitta tephronota | Ungraded | |
| Nuthatch, Krüper's | Sitta krueperi | Ungraded | |
| Nuthatch, Pygmy | Sitta pygmaea | Ungraded | |
| Nuthatch, Red-breasted | Sitta canadensis | Mega | |
| Nuthatch, Velvet-fronted | Sitta frontalis | Ungraded | |
| Nuthatch, Western Rock | Sitta neumayer | Ungraded | |
| Nuthatch, White-breasted | Sitta carolinensis | Ungraded | |
| Nuthatch, White-browed | Sitta victoriae | Ungraded | |
| Nuthatch, White-tailed | Sitta himalayensis | Ungraded | |
| Nuthatch, Yunnan | Sitta yunnanensis | Ungraded | |
| Oceanodroma | Oceanodroma | Ungraded | |
| Oilbird | Steatornis caripensis | Ungraded | |
| Olivaceous Warbler sp. | Iduna opaca/pallida | Mega | |
| Openbill, Asian | Anastomus oscitans | Ungraded | |
| Orangequit | Euneornis campestris | Ungraded | |
| Oriole, African Golden | Oriolus auratus | Ungraded | |
| Oriole, Altamira | Icterus gularis | Ungraded | |
| Oriole, Audubon's | Icterus graduacauda | Ungraded | |
| Oriole, Baltimore | Icterus galbula | Mega | |
| Oriole, Black-cowled | Icterus prosthemelas | Ungraded | |
| Oriole, Black-headed | Oriolus larvatus | Ungraded | |
| Oriole, Black-hooded | Oriolus xanthornus | Ungraded | |
| Oriole, Black-naped | Oriolus chinensis | Ungraded | |
| Oriole, Black-vented | Icterus wagleri | Ungraded | |
| Oriole, Black-winged | Oriolus nigripennis | Ungraded | |
| Oriole, Bullock's | Icterus bullockii | Ungraded | |
| Oriole, Cuban | Icterus melanopsis | Ungraded | |
| Oriole, Dark-headed | Oriolus monacha | Ungraded | |
| Oriole, Epaulet | Icterus cayanensis | Ungraded | |
| Oriole, Golden | Oriolus oriolus | Scarce | |
| Oriole, Hispaniolan | Icterus dominicensis | Ungraded | |
| Oriole, Hooded | Icterus cucullatus | Ungraded | |
| Oriole, Indian Golden | Oriolus kundoo | Ungraded | |
| Oriole, Jamaican | Icterus leucopteryx | Ungraded | |
| Oriole, Maroon | Oriolus traillii | Ungraded | |
| Oriole, Montane | Oriolus percivali | Ungraded | |
| Oriole, Orange | Icterus auratus | Ungraded | |
| Oriole, Orange-backed | Icterus croconotus | Ungraded | |
| Oriole, Orchard | Icterus spurius | Ungraded | |
| Oriole, Philippine | Oriolus steerii | Ungraded | |
| Oriole, Sao Tome | Oriolus crassirostris | Ungraded | |
| Oriole, Scott's | Icterus parisorum | Ungraded | |
| Oriole, Slender-billed | Oriolus tenuirostris | Ungraded | |
| Oriole, Spot-breasted | Icterus pectoralis | Ungraded | |
| Oriole, St. Lucia | Icterus laudabilis | Ungraded | |
| Oriole, Streak-backed | Icterus pustulatus | Ungraded | |
| Oriole, Variable | Icterus pyrrhopterus | Ungraded | |
| Oriole, Western | Oriolus brachyrynchus | Ungraded | |
| Oriole, Yellow | Icterus nigrogularis | Ungraded | |
| Oriole, Yellow-backed | Icterus chrysater | Ungraded | |
| Oriole, Yellow-tailed | Icterus mesomelas | Ungraded | |
| Oropendola, Chestnut-headed | Psarocolius wagleri | Ungraded | |
| Oropendola, Crested | Psarocolius decumanus | Ungraded | |
| Oropendola, Green | Psarocolius viridis | Ungraded | |
| Oropendola, Montezuma | Gymnostinops montezuma | Ungraded | |
| Oropendola, Russet-backed | Psarocolius angustifrons | Ungraded | |
| Osprey | Pandion haliaetus | Local | |
| Osprey, Eastern | Pandion cristatus | Ungraded | |
| Ostrich | Struthio camelus | Ungraded | |
| Ostrich, Somali | Struthio molybdophanes | Ungraded | |
| Ouzel, Alpine Ring | Turdus torquatus alpestris | Ungraded | |
| Ouzel, Ring | Turdus torquatus | Local | |
| Ovenbird | Seiurus aurocapilla | Mega | |
| Owl, Abyssinian | Asio abyssinicus | Ungraded | |
| Owl, African Scops | Otus senegalensis | Ungraded | |
| Owl, African Wood | Strix woodfordii | Ungraded | |
| Owl, Andean Pygmy | Glaucidium jardinii | Ungraded | |
| Owl, Austral Pygmy | Glaucidium nana | Ungraded | |
| Owl, Bare-legged | Gymnoglaux lawrencii | Ungraded | |
| Owl, Barking | Ninox connivens | Ungraded | |
| Owl, Barn | Tyto alba | Common | |
| Owl, Barred | Strix varia | Ungraded | |
| Owl, Barred Eagle | Bubo sumatranus | Ungraded | |
| Owl, Black-and-white | Strix nigrolineata | Ungraded | |
| Owl, Blakiston's Fish | Bubo blakistoni | Ungraded | |
| Owl, Brown Fish | Ketupa zeylonensis | Ungraded | |
| Owl, Brown Hawk | Ninox scutulata | Ungraded | |
| Owl, Brown Wood- | Strix leptogrammica | Ungraded | |
| Owl, Buff-fronted | Aegolius harrisii | Ungraded | |
| Owl, Buffy Fish | Ketupa ketupu | Ungraded | |
| Owl, Burrowing | Athene cunicularia | Ungraded | |
| Owl, Cape Eagle- | Bubo capensis | Ungraded | |
| Owl, Choco Screech | Megascops centralis | Ungraded | |
| Owl, Cinnamon Screech | Megascops petersoni | Ungraded | |
| Owl, Cloud-forest Pygmy | Glaucidium nubicola | Ungraded | |
| Owl, Colima Pygmy | Glaucidium palmarum | Ungraded | |
| Owl, Collared Scops | Otus lettia | Ungraded | |
| Owl, Costa Rican Pygmy- | Glaucidium costaricanum | Ungraded | |
| Owl, Crested | Lophostrix cristata | Ungraded | |
| Owl, Cuban Pygmy- | Glaucidium siju | Ungraded | |
| Owl, Dark-breasted Barn | Tyto alba guttata | Rare | |
| Owl, Dusky Eagle | Bubo coromandus | Ungraded | |
| Owl, Eagle | Bubo bubo | Ungraded | |
| Owl, Eastern Barn | Tyto delicatula | Ungraded | |
| Owl, Eastern Grass | Tyto longimembris | Ungraded | |
| Owl, Eastern Screech | Megascops asio | Ungraded | |
| Owl, Elf | Micrathene whitneyi | Ungraded | |
| Owl, Eurasian Scops | Otus scops | Mega | |
| Owl, Fearful | Nesasio solomonensis | Ungraded | |
| Owl, Ferruginous Pygmy- | Glaucidium brasilianum | Ungraded | |
| Owl, Great Grey | Strix nebulosa | Ungraded | |
| Owl, Great Horned | Bubo virginianus | Ungraded | |
| Owl, Hume's Tawny | Strix butleri | Ungraded | |
| Owl, Indian Scops | Otus bakkamoena | Ungraded | |
| Owl, Little | Athene noctua | Common | |
| Owl, Long-eared | Asio otus | Local | |
| Owl, Magellanic Horned | Bubo magellanicus | Ungraded | |
| Owl, Malagasy Scops- | Otus rutilus | Ungraded | |
| Owl, Mantanani Scops | Otus mantananensis | Ungraded | |
| Owl, Marsh | Asio capensis | Ungraded | |
| Owl, Moluccan Scops | Otus magicus | Ungraded | |
| Owl, Mottled | Strix virgata | Ungraded | |
| Owl, Mottled Wood- | Strix ocellata | Ungraded | |
| Owl, Northern Hawk | Surnia ulula | Mega | |
| Owl, Northern Saw-whet | Aegolius acadicus | Ungraded | |
| Owl, Northern White-faced | Ptilopsis leucotis | Ungraded | |
| Owl, Oriental Scops | Otus sunia | Ungraded | |
| Owl, Pacific Pygmy- | Glaucidium peruanum | Ungraded | |
| Owl, Pacific Screech | Megascops cooperi | Ungraded | |
| Owl, Pel's Fishing | Scotopelia peli | Ungraded | |
| Owl, Pharaoh Eagle | Bubo ascalaphus | Ungraded | |
| Owl, Pygmy | Glaucidium passerinum | Mega | |
| Owl, Rufous | Ninox rufa | Ungraded | |
| Owl, Rufous-banded | Strix albitarsis | Ungraded | |
| Owl, Sao Tome Scops | Otus hartlaubi | Ungraded | |
| Owl, Serendib Scops | Otus thilohoffmanni | Ungraded | |
| Owl, Short-eared | Asio flammeus | Local | |
| Owl, Snowy | Bubo scandiacus | Rare | |
| Owl, Sokoke Scops | Otus ireneae | Ungraded | |
| Owl, Southern White-faced | Ptilopsis granti | Ungraded | |
| Owl, Spectacled | Pulsatrix perspicillata | Ungraded | |
| Owl, Spot-bellied Eagle | Bubo nipalensis | Ungraded | |
| Owl, Spotted | Strix occidentalis | Ungraded | |
| Owl, Spotted Eagle | Bubo africanus | Ungraded | |
| Owl, Sri Lanka Bay | Phodilus assimilis | Ungraded | |
| Owl, Striated Scops | Otus brucei | Ungraded | |
| Owl, Stygian | Asio stygius | Ungraded | |
| Owl, Sulawesi | Tyto rosenbergii | Ungraded | |
| Owl, Sunda Scops | Otus lempiji | Ungraded | |
| Owl, Tawny | Strix aluco | Common | |
| Owl, Tawny Fish | Ketupa flavipes | Ungraded | |
| Owl, Tawny-bellied Screech | Megascops watsonii | Ungraded | |
| Owl, Tengmalm's | Aegolius funereus | Mega | |
| Owl, Torotoroko Scops | Otus madagascariensis | Ungraded | |
| Owl, Ural | Strix uralensis | Mega | |
| Owl, Vermiculated Fishing- | Scotopelia bouvieri | Ungraded | |
| Owl, Vermiculated Screech | Megascops vermiculatus | Ungraded | |
| Owl, Verreaux's Eagle | Bubo lacteus | Ungraded | |
| Owl, White-fronted Scops- | Otus sagittatus | Ungraded | |
| Owlet, African Barred | Glaucidium capense | Ungraded | |
| Owlet, Asian Barred | Glaucidium cuculoides | Ungraded | |
| Owlet, Chestnut-backed | Glaucidium castanotum | Ungraded | |
| Owlet, Collared | Glaucidium brodiei | Ungraded | |
| Owlet, Jungle | Glaucidium radiatum | Ungraded | |
| Owlet, Long-whiskered | Xenoglaux loweryi | Ungraded | |
| Owlet, Pearl-spotted | Glaucidium perlatum | Ungraded | |
| Owlet, Red-chested | Glaucidium tephronotum | Ungraded | |
| Owlet, Spotted | Athene brama | Ungraded | |
| Owlet-nightjar, Archbold's | Aegotheles archboldi | Ungraded | |
| Owlet-nightjar, Australian | Aegotheles cristatus | Ungraded | |
| Oxpecker, Red-billed | Buphagus erythrorhynchus | Ungraded | |
| Oxpecker, Yellow-billed | Buphagus africanus | Ungraded | |
| Oystercatcher | Haematopus ostralegus | Common | |
| Oystercatcher, African Black | Haematopus moquini | Ungraded | |
| Oystercatcher, American | Haematopus palliatus | Ungraded | |
| Oystercatcher, Black | Haematopus bachmani | Ungraded | |
| Oystercatcher, Blackish | Haematopus ater | Ungraded | |
| Oystercatcher, Canary Islands | Haematopus meadewaldoi | Ungraded | |
| Oystercatcher, Chatham Island | Haematopus chathamensis | Ungraded | |
| Oystercatcher, Magellenic | Haematopus leucopodus | Ungraded | |
| Oystercatcher, Pied | Haematopus longirostris | Ungraded | |
| Oystercatcher, Sooty | Haematopus fuliginosus | Ungraded | |
| Oystercatcher, Variable | Haematopus unicolor | Ungraded | |
| Palmchat | Dulus dominicus | Ungraded | |
| Palmcreeper, Point-tailed | Berlepschia rikeri | Ungraded | |
| Paradigalla, Short-tailed | Paradigalla brevicauda | Ungraded | |
| Paradise-flycatcher, Asian | Terpsiphone paradisi | Ungraded | |
| Parakeet, Alexandrine | Psittacula eupatria | Ungraded | |
| Parakeet, Antipodes | Cyanoramphus unicolor | Ungraded | |
| Parakeet, Blossom-headed | Psittacula roseata | Ungraded | |
| Parakeet, Blue-crowned | Aratinga acuticaudata | Ungraded | |
| Parakeet, Brown-throated | Aratinga pertinax | Ungraded | |
| Parakeet, Cliff | Myiopsitta monachus luchsi | Ungraded | |
| Parakeet, Cobalt-winged | Brotogeris cyanoptera | Ungraded | |
| Parakeet, Cuban | Aratinga euops | Ungraded | |
| Parakeet, Dusky-headed | Aratinga weddellii | Ungraded | |
| Parakeet, Echo | Psittacula eques | Ungraded | |
| Parakeet, Finsch's | Aratinga finschi | Ungraded | |
| Parakeet, Flame-winged | Pyrrhura calliptera | Ungraded | |
| Parakeet, Golden-plumed | Leptosittaca branickii | Ungraded | |
| Parakeet, Green | Aratinga holochlora | Ungraded | |
| Parakeet, Grey-hooded | Psilopsiagon aymara | Ungraded | |
| Parakeet, Long-tailed | Psittacula longicauda | Ungraded | |
| Parakeet, Malabar | Psittacula columboides | Ungraded | |
| Parakeet, Malherbe's | Cyanoramphus malherbi | Ungraded | |
| Parakeet, Maroon-bellied | Pyrrhura frontalis | Ungraded | |
| Parakeet, Maroon-tailed | Pyrrhura melanura | Ungraded | |
| Parakeet, Mitred | Aratinga mitrata | Ungraded | |
| Parakeet, Monk | Myiopsitta monachus | Ungraded | |
| Parakeet, Nanday | Nandayus nenday | Ungraded | |
| Parakeet, Olive-throated | Aratinga nana | Ungraded | |
| Parakeet, Orange-chinned | Brotogeris jugularis | Ungraded | |
| Parakeet, Orange-fronted | Aratinga canicularis | Ungraded | |
| Parakeet, Painted | Pyrrhura picta | Ungraded | |
| Parakeet, Peach-fronted | Aratinga aurea | Ungraded | |
| Parakeet, Plain | Brotogeris tirica | Ungraded | |
| Parakeet, Plum-headed | Psittacula cyanocephala | Ungraded | |
| Parakeet, Red-breasted | Psittacula alexandri | Ungraded | |
| Parakeet, Red-crowned | Cyanoramphus novaezelandiae | Ungraded | |
| Parakeet, Red-eared | Pyrrhura hoematotis | Ungraded | |
| Parakeet, Red-masked | Aratinga erythrogenys | Ungraded | |
| Parakeet, Ring-necked | Psittacula krameri | Common | |
| Parakeet, Santa Marta | Pyrrhura viridicata | Ungraded | |
| Parakeet, Slaty-headed | Psittacula himalayana | Ungraded | |
| Parakeet, Sulphur-winged | Pyrrhura hoffmanni | Ungraded | |
| Parakeet, Sun | Aratinga solstitialis | Ungraded | |
| Parakeet, Tui | Brotogeris sanctithomae | Ungraded | |
| Parakeet, White-eared | Pyrrhura leucotis | Ungraded | |
| Parakeet, White-eyed | Aratinga leucophthalma | Ungraded | |
| Parakeet, Yellow-chevroned | Brotogeris chiriri | Ungraded | |
| Parakeet, Yellow-crowned | Cyanoramphus auriceps | Ungraded | |
| Pardalote, Forty-spotted | Pardalotus quadragintus | Ungraded | |
| Pardalote, Spotted | Pardalotus punctatus | Ungraded | |
| Pardalote, Striated | Pardalotus striatus | Ungraded | |
| Parotia, Lawes's | Parotia lawesii | Ungraded | |
| Parrot sp. | Psittacidae | Ungraded | |
| Parrot, Australian King | Alisterus scapularis | Ungraded | |
| Parrot, Black | Coracopsis nigra | Ungraded | |
| Parrot, Blue-crowned Hanging | Loriculus galgulus | Ungraded | |
| Parrot, Blue-fronted | Amazona aestiva | Ungraded | |
| Parrot, Blue-headed | Pionus menstruus | Ungraded | |
| Parrot, Blue-winged | Neophema chrysostoma | Ungraded | |
| Parrot, Brehm's Tiger- | Psittacella brehmii | Ungraded | |
| Parrot, Bronze-winged | Pionus chalcopterus | Ungraded | |
| Parrot, Brown-headed | Poicephalus cryptoxanthus | Ungraded | |
| Parrot, Brown-hooded | Pyrilia haematotis | Ungraded | |
| Parrot, Brown-necked | Poicephalus fuscicollis | Ungraded | |
| Parrot, Buff-faced Pygmy | Micropsitta pusio | Ungraded | |
| Parrot, Cape | Poicephalus robustus | Ungraded | |
| Parrot, Crimson Shining- | | Ungraded | |
| Parrot, Cuban | Amazona leucocephala | Ungraded | |
| Parrot, Double-eyed Fig- | Cyclopsitta diophthalma | Ungraded | |
| Parrot, Eclectus | Eclectus roratus | Ungraded | |
| Parrot, Elegant | Neophema elegans | Ungraded | |
| Parrot, Golden-shouldered | Psephotus chrysopterygius | Ungraded | |
| Parrot, Greater Vasa | Coracopsis vasa | Ungraded | |
| Parrot, Grey | Psittacus erithacus | Ungraded | |
| Parrot, Ground | Pezoporus wallicus | Ungraded | |
| Parrot, Meyer's | Poicephalus meyeri | Ungraded | |
| Parrot, Mulga | Psephotus varius | Ungraded | |
| Parrot, Orange-bellied | Neophema chrysogaster | Ungraded | |
| Parrot, Orange-cheeked | Pyrilia barrabandi | Ungraded | |
| Parrot, Orange-winged | Amazona amazonica | Ungraded | |
| Parrot, Red-bellied | Poicephalus rufiventris | Ungraded | |
| Parrot, Red-billed | Pionus sordidus | Ungraded | |
| Parrot, Red-capped | Purpureicephalus spurius | Ungraded | |
| Parrot, Red-fronted | Poicephalus gulielmi | Ungraded | |
| Parrot, Red-rumped | Psephotus haematonotus | Ungraded | |
| Parrot, Red-winged | Aprosmictus erythropterus | Ungraded | |
| Parrot, Regent | Polytelis anthopeplus | Ungraded | |
| Parrot, Rock | Neophema petrophila | Ungraded | |
| Parrot, Scaly-headed | | Ungraded | |
| Parrot, Senegal | Poicephalus senegalus | Ungraded | |
| Parrot, Sri Lanka Hanging | Loriculus beryllinus | Ungraded | |
| Parrot, Vernal Hanging- | Loriculus vernalis | Ungraded | |
| Parrot, Yellow-crowned | Amazona ochrocephala | Ungraded | |
| Parrot, Yellow-fronted | Poicephalus flavifrons | Ungraded | |
| Parrot, Yellow-naped | Amazona auropalliata | Ungraded | |
| Parrot, Yellow-shouldered | Amazona barbadensis | Ungraded | |
| Parrotbill, Black-throated | Suthora nipalensis | Ungraded | |
| Parrotbill, Brown | Cholornis unicolor | Ungraded | |
| Parrotbill, Grey-hooded | Sinosuthora zappeyi | Ungraded | |
| Parrotbill, Reed | Paradoxornis heudei | Ungraded | |
| Parrotbill, Spot-breasted | Paradoxornis guttaticollis | Ungraded | |
| Parrotbill, Vinous-throated | Paradoxornis webbianus | Ungraded | |
| Parrot-Finch, Fiji | Erythrura pealii | Ungraded | |
| Parrotfinch, Pin-tailed | Erythrura prasina | Ungraded | |
| Parrotlet, Blue-winged | | Ungraded | |
| Parrotlet, Green-rumped | Forpus passerinus | Ungraded | |
| Parrotlet, Pacific | Forpus coelestis | Ungraded | |
| Parrotlet, Spectacled | Forpus conspicillatus | Ungraded | |
| Parrotlet, Yellow-faced | Forpus xanthops | Ungraded | |
| Parrots, Mealy | Amazona farinosa | Ungraded | |
| Partridge, Arabian | Alectoris melanocephala | Ungraded | |
| Partridge, Bar-backed | Arborophila brunneopectus | Ungraded | |
| Partridge, Barbary | Alectoris barbara | Ungraded | |
| Partridge, Chinese Bamboo | Bambusicola thoracicus | Ungraded | |
| Partridge, Daurian | Perdix dauurica | Ungraded | |
| Partridge, Grey | Perdix perdix | Common | |
| Partridge, Philby's | Alectoris philbyi | Ungraded | |
| Partridge, Red-legged | Alectoris rufa | Common | |
| Partridge, Rock | Alectoris graeca | Ungraded | |
| Partridge, Rufous-throated | Arborophila rufogularis | Ungraded | |
| Partridge, Sand | Ammoperdix heyi | Ungraded | |
| Partridge, See-see | Ammoperdix griseogularis | Ungraded | |
| Partridge, Snow | Lerwa lerwa | Ungraded | |
| Partridge, Stone | Ptilopachus petrosus | Ungraded | |
| Parula, Northern | Setophaga americana | Mega | |
| Parula, Tropical | Setophaga pitiayumi | Ungraded | |
| Pauraque, Common | Nyctidromus albicollis | Ungraded | |
| Peacock-Pheasant, Palawan | Polyplectron napoleonis | Ungraded | |
| Peafowl, Green | Pavo muticus | Ungraded | |
| Peafowl, Indian | Pavo cristatus | Ungraded | |
| Pelican sp. | Pelecanus | Ungraded | |
| Pelican, American White | Pelecanus erythrorhynchos | Ungraded | |
| Pelican, Australian | Pelecanus conspicillatus | Ungraded | |
| Pelican, Brown | Pelecanus occidentalis | Ungraded | |
| Pelican, Dalmatian | Pelecanus crispus | Ungraded | |
| Pelican, Great White | Pelecanus onocrotalus | Ungraded | |
| Pelican, Peruvian | Pelecanus thagus | Ungraded | |
| Pelican, Pink-backed | Pelecanus rufescens | Ungraded | |
| Pelican, Spot-billed | Pelecanus philippensis | Ungraded | |
| Penguin, Adelie | Pygoscelis adeliae | Ungraded | |
| Penguin, African | Spheniscus demersus | Ungraded | |
| Penguin, Chinstrap | Pygoscelis antarctica | Ungraded | |
| Penguin, Emperor | Aptenodytes forsteri | Ungraded | |
| Penguin, Fiordland Crested | Eudyptes pachyrhynchus | Ungraded | |
| Penguin, Galapagos | Spheniscus mendiculus | Ungraded | |
| Penguin, Gentoo | Pygoscelis papua | Ungraded | |
| Penguin, King | Aptenodytes patagonicus | Ungraded | |
| Penguin, Little | Eudyptula minor | Ungraded | |
| Penguin, Macaroni | Eudyptes chrysolophus | Ungraded | |
| Penguin, Magellanic | Spheniscus magellanicus | Ungraded | |
| Penguin, Rockhopper | Eudyptes chrysocome | Ungraded | |
| Penguin, Snares | Eudyptes robustus | Ungraded | |
| Penguin, Southern Rockhopper | Eudyptes chrysocome chrysocome | Ungraded | |
| Penguin, Yellow-eyed | Megadyptes antipodes | Ungraded | |
| Peppershrike, Rufous-browed | Cyclarhis gujanensis | Ungraded | |
| Petrel sp. | Procellariidae | Scarce | |
| Petrel, Antarctic | Thalassoica antarctica | Ungraded | |
| Petrel, Atlantic | Pterodroma incerta | Mega | |
| Petrel, Bermuda | Pterodroma cahow | Mega | |
| Petrel, Black | Procellaria parkinsoni | Ungraded | |
| Petrel, Black-capped | Pterodroma hasitata | Mega | |
| Petrel, Black-winged | Pterodroma nigripennis | Ungraded | |
| Petrel, Blue | Halobaena caerulea | Ungraded | |
| Petrel, Bulwer's | Bulweria bulwerii | Mega | |
| Petrel, Cape | Daption capense | Mega | |
| Petrel, Collared | Pterodroma leucoptera | Ungraded | |
| Petrel, Common Diving | Pelecanoides urinatrix | Ungraded | |
| Petrel, Cook's | Pterodroma cookii | Ungraded | |
| Petrel, De Filippi's | Pterodroma defilippiana | Ungraded | |
| Petrel, Fea's | Pterodroma feae | Rare | |
| Petrel, Fea's/Zino's | Pterodroma deserta/feae/madeira | Rare | |
| Petrel, Galápagos | Pterodroma phaeopygia | Ungraded | |
| Petrel, Great-winged | Pterodroma macroptera | Ungraded | |
| Petrel, Grey | Procellaria cinerea | Ungraded | |
| Petrel, Grey-backed Storm | Garrodia nereis | Ungraded | |
| Petrel, Henderson | Pterodroma atrata | Ungraded | |
| Petrel, Herald | Pterodroma arminjoniana | Ungraded | |
| Petrel, Hornby's Storm | Oceanodroma hornbyi | Ungraded | |
| Petrel, Jouanin's | Bulweria fallax | Ungraded | |
| Petrel, Juan Fernandez | Pterodroma externa | Ungraded | |
| Petrel, Kerguelen | Pterodroma brevirostris | Ungraded | |
| Petrel, Kermadec | Pterodroma neglecta | Mega | |
| Petrel, Mottled | Pterodroma inexpectata | Ungraded | |
| Petrel, New Zealand Storm | Fregetta maoriana | Ungraded | |
| Petrel, Northern Giant | Macronectes halli | Ungraded | |
| Petrel, Providence | Pterodroma solandri | Ungraded | |
| Petrel, Snow | Pagodroma nivea | Ungraded | |
| Petrel, Soft-plumaged | Pterodroma mollis | Mega | |
| Petrel, Southern Giant | Macronectes giganteus | Ungraded | |
| Petrel, Spectacled | Procellaria conspicillata | Ungraded | |
| Petrel, Tahiti | Pseudobulweria rostrata | Ungraded | |
| Petrel, Westland | Procellaria westlandica | Ungraded | |
| Petrel, White-chinned | Procellaria aequinoctialis | Ungraded | |
| Petrel, White-headed | Pterodroma lessonii | Ungraded | |
| Petrel, White-necked | Pterodroma cervicalis | Ungraded | |
| Petrel, Zino's | Pterodroma madeira | Mega | |
| Petronia, Bush | Gymnoris dentata | Ungraded | |
| Petronia, Chestnut-shouldered | Gymnoris xanthocollis | Ungraded | |
| Petronia, Yellow-spotted | Petronia pyrgita | Ungraded | |
| Petronia, Yellow-throated | Petronia superciliaris | Ungraded | |
| Pewee, Blackish | Contopus nigrescens | Ungraded | |
| Pewee, Cuban | Contopus caribaeus | Ungraded | |
| Pewee, Dark | Contopus lugubris | Ungraded | |
| Pewee, Eastern Wood- | Contopus virens | Ungraded | |
| Pewee, Lesser Antillean | Contopus latirostris | Ungraded | |
| Pewee, Smoke-coloured | Contopus fumigatus | Ungraded | |
| Pewee, St. Lucia | Contopus latirostris oberi | Ungraded | |
| Pewee, Tropical | Contopus cinereus | Ungraded | |
| Pewee, Western Wood | Contopus sordidulus | Ungraded | |
| Phainopepla | Phainopepla nitens | Ungraded | |
| Phainoptila, Black-and-yellow | Phainoptila melanoxantha | Ungraded | |
| Phalarope sp. | Phalaropus | Scarce | |
| Phalarope, Grey | Phalaropus fulicarius | Scarce | |
| Phalarope, Red-necked | Phalaropus lobatus | Scarce | |
| Phalarope, Wilson's | Phalaropus tricolor | Rare | |
| Pheasant | Phasianus colchicus | Common | |
| Pheasant, Cheer | Catreus wallichii | Ungraded | |
| Pheasant, Golden | Chrysolophus pictus | Local | |
| Pheasant, Green | Phasianus versicolor | Ungraded | |
| Pheasant, Kalij | Lophura leucomelanos | Ungraded | |
| Pheasant, Koklass | Pucrasia macrolopha | Ungraded | |
| Pheasant, Lady Amherst's | Chrysolophus amherstiae | Scarce | |
| Pheasant, Mikado | Syrmaticus mikado | Ungraded | |
| Pheasant, Reeves's | Syrmaticus reevesii | Ungraded | |
| Pheasant, Silver | Lophura nycthemera | Ungraded | |
| Pheasant, Swinhoe's | Lophura swinhoii | Ungraded | |
| Philentoma, Maroon-breasted | Philentoma velata | Ungraded | |
| Phoebe, Black | Sayornis nigricans | Ungraded | |
| Phoebe, Eastern | Sayornis phoebe | Mega | |
| Phoebe, Says | Sayornis saya | Ungraded | |
| Phylloscopid warblers | Phylloscopidae | Ungraded | |
| Phylloscopus sp. | Phylloscopus | Rare | |
| Piapiac | Ptilostomus afer | Ungraded | |
| Piculet, African | Sasia africana | Ungraded | |
| Piculet, Lafresnaye's | Picumnus lafresnayi | Ungraded | |
| Piculet, Ochre-collared | Picumnus temminckii | Ungraded | |
| Piculet, Scaled | Picumnus squamulatus | Ungraded | |
| Piculet, Speckle-chested | Picumnus steindachneri | Ungraded | |
| Piculet, Speckled | Picumnus innominatus | Ungraded | |
| Piculet, White-barred | Picumnus cirratus | Ungraded | |
| Piculet, White-bellied | Picumnus spilogaster | Ungraded | |
| Piculet, White-wedged | Picumnus albosquamatus | Ungraded | |
| Pigeon, Afep | Columba unicincta | Ungraded | |
| Pigeon, African Green- | Treron calva | Ungraded | |
| Pigeon, African Olive | Columba arquatrix | Ungraded | |
| Pigeon, Andaman Wood | Columba palumboides | Ungraded | |
| Pigeon, Band-tailed | Patagioenas fasciata | Ungraded | |
| Pigeon, Bare-eyed | Columba corensis | Ungraded | |
| Pigeon, Bolle's Laurel | Columba bollii | Ungraded | |
| Pigeon, Bruce's Green | Treron waalia | Ungraded | |
| Pigeon, Chatham | Hemiphaga chathamensis | Ungraded | |
| Pigeon, Chilean | Columba araucana | Ungraded | |
| Pigeon, Crested | Ocyphaps lophotes | Ungraded | |
| Pigeon, Feral/Dove, Rock | Columba livia | Common | |
| Pigeon, Goliath Imperial | Ducula goliath | Ungraded | |
| Pigeon, Green Imperial | Ducula aenea | Ungraded | |
| Pigeon, Hill | Columba rupestris | Ungraded | |
| Pigeon, Laurel | Columba junoniae | Ungraded | |
| Pigeon, Little Green | Treron olax | Ungraded | |
| Pigeon, Madagascar Green- | Treron australis | Ungraded | |
| Pigeon, Metallic | Columba vitiensis | Ungraded | |
| Pigeon, Mountain Imperial | Ducula badia | Ungraded | |
| Pigeon, New Zealand | Hemiphaga novaeseelandiae | Ungraded | |
| Pigeon, Nicobar | Caloenas nicobarica | Ungraded | |
| Pigeon, Nilgiri Wood- | Columba elphinstonii | Ungraded | |
| Pigeon, Orange-breasted Green | Treron bicinctus | Ungraded | |
| Pigeon, Pale-vented | Columba cayennensis | Ungraded | |
| Pigeon, Passenger | Ectopistes migratorius | Ungraded | |
| Pigeon, Picazuro | Columba picazuro | Ungraded | |
| Pigeon, Pied Imperial | Ducula bicolor | Ungraded | |
| Pigeon, Pink | Columba mayeri | Ungraded | |
| Pigeon, Pink-necked Green | Treron vernans | Ungraded | |
| Pigeon, Pinon's Imperial | Ducula pinon | Ungraded | |
| Pigeon, Pin-tailed Green | Treron apicauda | Ungraded | |
| Pigeon, Plumbeous | Columba plumbea | Ungraded | |
| Pigeon, Pompadour Green- | Treron pompadora | Ungraded | |
| Pigeon, Purple-tailed Imperial- | Ducula rufigaster | Ungraded | |
| Pigeon, Red-knobbed Imperial | Ducula rubricera | Ungraded | |
| Pigeon, Ruddy | Columba subvinacea | Ungraded | |
| Pigeon, Sao Tome Olive | columba thomensis | Ungraded | |
| Pigeon, Scaled | Patagioenas speciosa | Ungraded | |
| Pigeon, Scaly-naped | Patagioenas squamosa | Ungraded | |
| Pigeon, Seychelles Blue | Alectroenas pulcherrima | Ungraded | |
| Pigeon, Snow | Columba leuconota | Ungraded | |
| Pigeon, Southern Crowned | Goura scheepmakeri | Ungraded | |
| Pigeon, Speckled | Columba guinea | Ungraded | |
| Pigeon, Speckled Wood | Columba hodgsonii | Ungraded | |
| Pigeon, Spinifex | Geophaps plumifera | Ungraded | |
| Pigeon, Spot-winged | Columba maculosa | Ungraded | |
| Pigeon, Squatter | Geophaps scripta | Ungraded | |
| Pigeon, Sri Lanka Wood | Columba torringtoniae | Ungraded | |
| Pigeon, Thick-billed Green | Treron curvirostra | Ungraded | |
| Pigeon, Topknot | Lopholaimus antarcticus | Ungraded | |
| Pigeon, Torresian Imperial | Ducula spilorrhoa | Ungraded | |
| Pigeon, Trocaz | Columba trocaz | Ungraded | |
| Pigeon, White-bellied Green | Treron sieboldii | Ungraded | |
| Pigeon, White-collared | Columba albitorques | Ungraded | |
| Pigeon, White-crowned | Patagioenas leucocephala | Ungraded | |
| Pigeon, White-headed | Columba leucomela | Ungraded | |
| Pigeon, White-naped | Columba albinucha | Ungraded | |
| Pigeon, Wonga | Leucosarcia melanoleuca | Ungraded | |
| Pigeon, Wood | Columba palumbus | Common | |
| Pigeon, Yellow-footed Green | Treron phoenicoptera | Ungraded | |
| Pigeon, Zoe's Imperial | Ducula zoeae | Ungraded | |
| Piha, Chestnut-capped | Lipaugus weberi | Ungraded | |
| Piha, Olivaceous | Lipaugus cryptolophus | Ungraded | |
| Piha, Screaming | Lipaugus vociferans | Ungraded | |
| Pintail | Anas acuta | Common | |
| Pintail, Eaton's | Anas eatoni | Ungraded | |
| Pintail, Galapagos | Anas bahamensis galapagoensis | Ungraded | |
| Pintail, White-cheeked | Anas bahamensis | Ungraded | |
| Pintail, Yellow-billed | Anas georgica | Ungraded | |
| Pipipi | Mohoua novaeseelandiae | Ungraded | |
| Pipit sp. | Anthus | Scarce | |
| Pipit, African | Anthus cinnamomeus | Ungraded | |
| Pipit, Australasian | Anthus australis | Ungraded | |
| Pipit, Berthelot's | Anthus berthelotii | Ungraded | |
| Pipit, Blyth's | Anthus godlewskii | Mega | |
| Pipit, Buff-bellied | Anthus rubescens | Mega | |
| Pipit, Correndera | Anthus correndera | Ungraded | |
| Pipit, Golden | Tmetothylacus tenellus | Ungraded | |
| Pipit, Long-billed | Anthus similis | Ungraded | |
| Pipit, Long-legged | Anthus pallidiventris | Ungraded | |
| Pipit, Malindi | Anthus melindae | Ungraded | |
| Pipit, Meadow | Anthus pratensis | Common | |
| Pipit, New Zealand | Anthus novaeseelandiae | Ungraded | |
| Pipit, Nilgiri | Anthus nilghiriensis | Ungraded | |
| Pipit, Olive-backed | Anthus hodgsoni | Rare | |
| Pipit, Paddyfield | Anthus rufulus | Ungraded | |
| Pipit, Paramo | Anthus bogotensis | Ungraded | |
| Pipit, Pechora | Anthus gustavi | Rare | |
| Pipit, Plain-backed | Anthus leucophrys | Ungraded | |
| Pipit, Red-throated | Anthus cervinus | Rare | |
| Pipit, Richard's | Anthus richardi | Scarce | |
| Pipit, Rock | Anthus petrosus | Common | |
| Pipit, Rosy | Anthus roseatus | Ungraded | |
| Pipit, Scandinavian Rock | Anthus petrosus littoralis | Local | |
| Pipit, Short-billed | Anthus furcatus | Ungraded | |
| Pipit, Sokoke | Anthus sokokensis | Ungraded | |
| Pipit, South Georgia | Anthus antarcticus | Ungraded | |
| Pipit, Tawny | Anthus campestris | Rare | |
| Pipit, Tree | Anthus trivialis | Common | |
| Pipit, Water | Anthus spinoletta | Local | |
| Pipit, Woodland | Anthus nyassae | Ungraded | |
| Pipit, Yellowish | Anthus lutescens | Ungraded | |
| Piprites, Black-capped | Piprites pileatus | Ungraded | |
| Pitta, African | Pitta angolensis | Ungraded | |
| Pitta, Black-crowned | Erythropitta ussheri | Ungraded | |
| Pitta, Blue | Hydrornis cyaneus | Ungraded | |
| Pitta, Blue-winged | Pitta moluccensis | Ungraded | |
| Pitta, Eared | Hydrornis phayrei | Ungraded | |
| Pitta, Gurney's | Pitta gurneyi | Ungraded | |
| Pitta, Hooded | Pitta sordida | Ungraded | |
| Pitta, Indian | Pitta brachyura | Ungraded | |
| Pitta, Javan Banded | Hydrornis guajanus | Ungraded | |
| Pitta, Malayan Banded | Hydrornis irena | Ungraded | |
| Pitta, Mangrove | Pitta megarhyncha | Ungraded | |
| Pitta, Noisy | Pitta versicolor | Ungraded | |
| Pitta, Red-bellied | Pitta erythrogaster | Ungraded | |
| Plains-wanderer | Pedionomus torquatus | Ungraded | |
| Plantain-eater, Eastern Grey | Crinifer zonurus | Ungraded | |
| Plantain-eater, Western Grey | Crinifer piscator | Ungraded | |
| Plantcutter, White-tipped | Phytotoma rutila | Ungraded | |
| Plover sp. | Charadrius | Rare | |
| Plover, American Golden | Pluvialis dominica | Scarce | |
| Plover, American/Pacific Golden | Pluvialis dominica/fulva | Rare | |
| Plover, Caspian | Charadrius asiaticus | Mega | |
| Plover, Chestnut-banded | Charadrius pallidus | Ungraded | |
| Plover, Collared | Charadrius collaris | Ungraded | |
| Plover, Crab | Dromas ardeola | Ungraded | |
| Plover, Diademed Sandpiper- | Phegornis mitchellii | Ungraded | |
| Plover, Egyptian | Pluvianus aegyptius | Ungraded | |
| Plover, Forbes's | Charadrius forbesi | Ungraded | |
| Plover, Golden | Pluvialis apricaria | Common | |
| Plover, Greater Sand | Charadrius leschenaultii | Mega | |
| Plover, Greater/Lesser Sand | Charadrius leschenaultii/mongolus | Mega | |
| Plover, Grey | Pluvialis squatarola | Common | |
| Plover, Hooded | Thinornis rubricollis | Ungraded | |
| Plover, Javan | Charadrius javanicus | Ungraded | |
| Plover, Kentish | Charadrius alexandrinus | Scarce | |
| Plover, Kittlitz's | Charadrius pecuarius | Ungraded | |
| Plover, Lesser Sand | Charadrius mongolus | Mega | |
| Plover, Little Ringed | Charadrius dubius | Common | |
| Plover, Long-billed | Charadrius placidus | Ungraded | |
| Plover, Madagascar | charadrius thoracicus | Ungraded | |
| Plover, Malaysian | Charadrius peronii | Ungraded | |
| Plover, Oriental | Charadrius veredus | Mega | |
| Plover, Pacific Golden | Pluvialis fulva | Rare | |
| Plover, Pied | Hoploxypterus cayanus | Ungraded | |
| Plover, Piping | Charadrius melodus | Ungraded | |
| Plover, Red-breasted | Charadrius obscurus | Ungraded | |
| Plover, Red-capped | Charadrius ruficapillus | Ungraded | |
| Plover, Ringed | Charadrius hiaticula | Common | |
| Plover, Rufous-chested | Charadrius modestus | Ungraded | |
| Plover, Semipalmated | Charadrius semipalmatus | Mega | |
| Plover, Shore | Thinornis novaeseelandiae | Ungraded | |
| Plover, Snowy | Charadrius nivosus | Mega | |
| Plover, Spur-winged | Vanellus spinosus | Ungraded | |
| Plover, Three-banded | Charadrius tricollaris | Ungraded | |
| Plover, Tundra Ringed | Charadrius hiaticula tundrae | Ungraded | |
| Plover, Two-banded | Charadrius falklandicus | Ungraded | |
| Plover, White-fronted | Charadrius marginatus | Ungraded | |
| Plover, White-tailed | Vanellus leucurus | Mega | |
| Plover, Wilson's | Charadrius wilsonia | Ungraded | |
| Plovercrest | Stephanoxis lalandi | Ungraded | |
| Plovers | Charadriidae | Ungraded | |
| Plumeleteer, Bronze-tailed | Chalybura urochrysia | Ungraded | |
| Plumeleteer, White-vented | Chalybura buffonii | Ungraded | |
| Plushcap | Catamblyrhynchus diadema | Ungraded | |
| Pochard | Aythya ferina | Common | |
| Pochard, Baer's | Aythya baeri | Ungraded | |
| Pochard, Madagascar | Aythya innotata | Ungraded | |
| Pochard, Red-crested | Netta rufina | Common | |
| Pochard, Rosy-billed | Netta peposaca | Ungraded | |
| Pochard, Southern | Netta erythrophthalma | Ungraded | |
| Potoo, Andean | Nyctibius maculosus | Ungraded | |
| Potoo, Common | Nyctibius griseus | Ungraded | |
| Potoo, Great | Nyctibius grandis | Ungraded | |
| Potoo, Long-tailed | Nyctibius aethereus | Ungraded | |
| Potoo, Northern | Nyctibius jamaicensis | Ungraded | |
| Prairie-chicken, Greater | Tympanuchus cupido | Ungraded | |
| Pratincole sp. | Glareola | Rare | |
| Pratincole, Black-winged | Glareola nordmanni | Rare | |
| Pratincole, Collared | Glareola pratincola | Rare | |
| Pratincole, Grey | Glareola cinerea | Ungraded | |
| Pratincole, Madagascar | Glareola ocularis | Ungraded | |
| Pratincole, Oriental | Glareola maldivarum | Mega | |
| Pratincole, Rock | Glareola nuchalis | Ungraded | |
| Pratincole, Small | Glareola lactea | Ungraded | |
| Prinia, Ashy | Prinia socialis | Ungraded | |
| Prinia, Banded | Prinia bairdii | Ungraded | |
| Prinia, Black-chested | Prinia flavicans | Ungraded | |
| Prinia, Graceful | Prinia gracilis | Mega | |
| Prinia, Grey-breasted | Prinia hodgsonii | Ungraded | |
| Prinia, Hill | Prinia atrogularis | Ungraded | |
| Prinia, Jungle | Prinia sylvatica | Ungraded | |
| Prinia, Karoo | Prinia maculosa | Ungraded | |
| Prinia, Plain | Prinia inornata | Ungraded | |
| Prinia, Rufescent | Prinia rufescens | Ungraded | |
| Prinia, Rufous-fronted | Prinia buchanani | Ungraded | |
| Prinia, Striated | Prinia crinigera | Ungraded | |
| Prinia, Tawny-flanked | Prinia subflava | Ungraded | |
| Prinia, White-chinned | Schistolais leucopogon | Ungraded | |
| Prinia, Yellow-bellied | Prinia flaviventris | Ungraded | |
| Prion, Antarctic | Pachyptila desolata | Ungraded | |
| Prion, Broad-billed | Pachyptila vittata | Ungraded | |
| Prion, Fairy | Pachyptila turtur | Ungraded | |
| Prion, Salvin's | Pachyptila salvini | Ungraded | |
| Prion, Slender-billed | Pachyptila belcheri | Ungraded | |
| Ptarmigan | Lagopus muta | Local | |
| Ptarmigan, White-tailed | Lagopus leucura | Ungraded | |
| Puffback, Black-backed | Dryoscopus cubla | Ungraded | |
| Puffback, Northern | Dryoscopus gambensis | Ungraded | |
| Puffbird, Black-breasted | Notharchus pectoralis | Ungraded | |
| Puffbird, Chestnut-capped | Bucco macrodactylus | Ungraded | |
| Puffbird, Crescent-chested | Malacoptila striata | Ungraded | |
| Puffbird, Guianan | Notharchus macrorhynchos | Ungraded | |
| Puffbird, Moustached | Malacoptila mystacalis | Ungraded | |
| Puffbird, Pied | Notharchus tectus | Ungraded | |
| Puffbird, Russet-throated | Hypnelus ruficollis | Ungraded | |
| Puffbird, Spot-backed | Nystalus maculatus | Ungraded | |
| Puffbird, Striolated | Nystalus striolatus | Ungraded | |
| Puffbird, Two-banded | Hypnelus ruficollis bicinctus | Ungraded | |
| Puffbird, White-chested | Malacoptila fusca | Ungraded | |
| Puffbird, White-eared | Nystalus chacuru | Ungraded | |
| Puffbird, White-necked | Notharchus macrorhynchos | Ungraded | |
| Puffbird, White-whiskered | Malacoptila panamensis | Ungraded | |
| Puffin | Fratercula arctica | Local | |
| Puffin, Horned | Fratercula corniculata | Mega | |
| Puffin, Tufted | Fratercula cirrhata | Mega | |
| Puffleg, Black-thighed | Eriocnemis derbyi | Ungraded | |
| Puffleg, Emerald-bellied | Eriocnemis aline | Ungraded | |
| Puffleg, Glowing | Eriocnemis vestita | Ungraded | |
| Puffleg, Golden-breasted | Eriocnemis mosquera | Ungraded | |
| Puffleg, Greenish | Haplophaedia aureliae | Ungraded | |
| Puffleg, Hoary | Haplophaedia lugens | Ungraded | |
| Puffleg, Sapphire-vented | Eriocnemis luciani | Ungraded | |
| Purpletuft, Buff-throated | Iodopleura Pipra | Ungraded | |
| Purpletuft, White-browed | Iodopleura isabellae | Ungraded | |
| Pygmy-tyrant, Fork-tailed | Hemitriccus furcatus | Ungraded | |
| Pyrrhuloxia | Cardinalis sinatus | Ungraded | |
| Pytilia, Green-winged | Pytilia melba | Ungraded | |
| Pytilia, Red-billed | Pytilia lineata | Ungraded | |
| Quail | Coturnix coturnix | Local | |
| Quail, Black-fronted Wood | Odontophorus atrifrons | Ungraded | |
| Quail, California | Callipepla californica | Ungraded | |
| Quail, Chestnut Wood | Odontophorus hyperythrus | Ungraded | |
| Quail, Dark-backed Wood | Odontophorus melanonotus | Ungraded | |
| Quail, Gambel's | Callipepla gambelii | Ungraded | |
| Quail, Harlequin | Coturnix delegorguei | Ungraded | |
| Quail, Japanese | Coturnix japonica | Ungraded | |
| Quail, Montezuma | Cyrtonyx montezumae | Ungraded | |
| Quail, Mountain | Oreortyx pictus | Ungraded | |
| Quail, Painted Bush | Perdicula erythrorhyncha | Ungraded | |
| Quail, Painted Button- | Turnix varius | Ungraded | |
| Quail, Rain | Coturnix coromandelica | Ungraded | |
| Quail, Scaled | Callipepla squamata | Ungraded | |
| Quail, Spotted Wood | Odontophorus guttatus | Ungraded | |
| Quail-Dove, Blue-headed | Starnoenas cyanocephala | Ungraded | |
| Quail-Dove, Ruddy | Geotrygon montana | Ungraded | |
| Quail-Dove, White-fronted | Geotrygon leucometopia | Ungraded | |
| Quail-finch, Black-faced | Ortygospiza atricollis | Ungraded | |
| Quailfinch, Red-billed | Ortygospiza gabonensis | Ungraded | |
| Quail-plover | Ortyxelos meiffrenii | Ungraded | |
| Quelea, Red-billed | Quelea quelea | Ungraded | |
| Quetzal, Crested | Pharomachrus antisianus | Ungraded | |
| Quetzal, Golden-headed | Pharomachrus auriceps | Ungraded | |
| Quetzal, Resplendent | Pharomachrus mocinno | Ungraded | |
| Quetzal, White-tipped | Pharomachrus fulgidus | Ungraded | |
| Racket-tail, Booted | Ocreatus underwoodii | Ungraded | |
| Rail, African | Rallus caerulescens | Ungraded | |
| Rail, Barred | Gallirallus torquatus | Ungraded | |
| Rail, Bogota | Rallus semiplumbeus | Ungraded | |
| Rail, Buff-banded | Gallirallus philippensis | Ungraded | |
| Rail, Chestnut | Eulabeornis castaneoventris | Ungraded | |
| Rail, Clapper | Rallus longirostris | Ungraded | |
| Rail, Giant Wood | Aramides ypecaha | Ungraded | |
| Rail, Grey-necked Wood | Aramides cajaneus | Ungraded | |
| Rail, King | Rallus elegans | Ungraded | |
| Rail, Madagascar | Rallus madagascariensis | Ungraded | |
| Rail, Okinawa | Gallirallus okinawae | Ungraded | |
| Rail, Rouget's | Rougetius rougetii | Ungraded | |
| Rail, Sakalava | Amaurornis olivieri | Ungraded | |
| Rail, Slaty-breasted | Gallirallus striatus | Ungraded | |
| Rail, Slaty-breasted Wood | Aramides saracura | Ungraded | |
| Rail, Spotted | Pardirallus maculatus | Ungraded | |
| Rail, Virginia | Rallus limicola | Ungraded | |
| Rail, Water | Rallus aquaticus | Common | |
| Rail, White-throated | Dryolimnas cuvieri | Ungraded | |
| raptor sp. | Falconiformes | Scarce | |
| Raven | Corvus corax | Common | |
| Raven, Australian | Corvus coronoides | Ungraded | |
| Raven, Brown-necked | Corvus ruficollis | Ungraded | |
| Raven, Chihuahuan | Corvus cryptoleucus | Ungraded | |
| Raven, Fan-tailed | Corvus rhipidurus | Ungraded | |
| Raven, Forest | Corvus tasmanicus | Ungraded | |
| Raven, Thick-billed | Corvus crassirostris | Ungraded | |
| Raven, White-necked | Corvus albicollis | Ungraded | |
| Rayadito, Thorn-tailed | Aphrastura spinicauda | Ungraded | |
| Razorbill | Alca torda | Local | |
| Razorbill, British | Alca torda islandica | Common | |
| Razorbill, Continental | Alca torda torda | Ungraded | |
| Recurvebill, Peruvian | Simoxenops ucayalae | Ungraded | |
| Redhead | Aythya americana | Mega | |
| Redpoll sp. | Carduelis | Local | |
| Redpoll, Arctic | Carduelis hornemanni | Scarce | |
| Redpoll, Common | Carduelis flammea | Local | |
| Redpoll, Coues' Arctic | Carduelis hornemanni exilipes | Scarce | |
| Redpoll, Hornemann's Arctic | Carduelis hornemanni hornemanni | Rare | |
| Redpoll, Lesser | Carduelis cabaret | Common | |
| Redpoll, Mealy | Carduelis flammea flammea | Local | |
| Redpoll, Northwestern | Carduelis flammea rostrata/islandica | Local | |
| Redshank, Common | Tringa totanus | Common | |
| Redshank, Iceland | Tringa totanus robusta | Ungraded | |
| Redshank, Spotted | Tringa erythropus | Local | |
| Redstart, American | Setophaga ruticilla | Mega | |
| Redstart, Black | Phoenicurus ochruros | Local | |
| Redstart, Blue-fronted | Phoenicurus frontalis | Ungraded | |
| Redstart, Collared | Myioborus torquatus | Ungraded | |
| Redstart, Common | Phoenicurus phoenicurus | Common | |
| Redstart, Daurian | Phoenicurus auroreus | Ungraded | |
| Redstart, Eastern Black | Phoenicurus ochruros phoenicuroides | Rare | |
| Redstart, Ehrenberg's | Phoenicurus phoenicurus samamisicus | Scarce | |
| Redstart, Eversmann's | Phoenicurus erythronotus | Ungraded | |
| Redstart, Güldenstädt's | Phoenicurus erythrogastrus | Ungraded | |
| Redstart, Hodgson's | Phoenicurus hodgsoni | Ungraded | |
| Redstart, Moussier's | Phoenicurus moussieri | Mega | |
| Redstart, Painted | Myioborus pictus | Ungraded | |
| Redstart, Plumbeous | Rhyacornis fuliginosa | Ungraded | |
| Redstart, Slate-throated | Myioborus miniatus | Ungraded | |
| Redstart, White-bellied | Hodgsonius phoenicuroides | Ungraded | |
| Redstart, White-capped Water | Chaimarrornis leucocephalus | Ungraded | |
| Redstart, White-throated | Phoenicurus schisticeps | Ungraded | |
| Redthroat | Pyrrholaemus brunneus | Ungraded | |
| Redwing | Turdus iliacus | Common | |
| Reedhaunter, Curve-billed | Limnornis curvirostris | Ungraded | |
| Reedhaunter, Straight-billed | Limnoctites rectirostris | Ungraded | |
| Rhabdornis, Stripe-breasted | Rhabdornis inornatus | Ungraded | |
| Rhea, Greater | Rhea americana | Ungraded | |
| Rhea, Lesser | Rhea pennata | Ungraded | |
| Riflebird, Victoria's | Ptiloris victoriae | Ungraded | |
| Rifleman | Acanthisitta chloris | Ungraded | |
| Ringneck, Australian | Barnardius zonarius | Ungraded | |
| Roadrunner, Greater | Geococcyx californianus | Ungraded | |
| Roadrunner, Lesser | Geococcyx velox | Ungraded | |
| Robin | Erithacus rubecula | Common | |
| Robin, American | Turdus migratorius | Mega | |
| Robin, Bearded Scrub- | Cercotrichas quadrivirgata | Ungraded | |
| Robin, Black | Petroica traversi | Ungraded | |
| Robin, Black Bush | Cercotrichas podobe | Ungraded | |
| Robin, Black-throated | Luscinia obscura | Ungraded | |
| Robin, Brown-backed Scrub- | Cercotrichas hartlaubi | Ungraded | |
| Robin, Clay-colored | Turdus grayi | Ungraded | |
| Robin, Collared Bush- | Tarsiger johnstoniae | Ungraded | |
| Robin, Dusky | Melanodryas vittata | Ungraded | |
| Robin, Eastern Yellow | Eopsaltria australis | Ungraded | |
| Robin, Fire-throated | Luscinia pectardens | Ungraded | |
| Robin, Flame | Petroica phoenicea | Ungraded | |
| Robin, Golden Bush | Tarsiger chrysaeus | Ungraded | |
| Robin, Grey-breasted | Eopsaltria griseogularis | Ungraded | |
| Robin, Grey-headed | Heteromyias cinereifrons | Ungraded | |
| Robin, Indian | Saxicoloides fulicata | Ungraded | |
| Robin, Indian Blue | Luscinia brunnea | Ungraded | |
| Robin, Japanese | Erithacus akahige | Ungraded | |
| Robin, Kalahari Scrub- | Cercotrichas paena | Ungraded | |
| Robin, Karoo Scrub | Erythropygia coryphoeus | Ungraded | |
| Robin, Madagascar Magpie- | Copsychus albospecularis | Ungraded | |
| Robin, Mangrove | Eopsaltria pulverulenta | Ungraded | |
| Robin, New Zealand | Petroica australis | Ungraded | |
| Robin, Nilgiri Blue | Myiomela major | Ungraded | |
| Robin, Oriental Magpie- | Copsychus saularis | Ungraded | |
| Robin, Pale-yellow | Tregellasia capito | Ungraded | |
| Robin, Pink | Petroica rodinogaster | Ungraded | |
| Robin, Red-capped | Petroica goodenovii | Ungraded | |
| Robin, Rufous Bush | Erythropygia galactotes | Mega | |
| Robin, Rufous-tailed | Luscinia sibilans | Mega | |
| Robin, Scarlet | Petroica boodang | Ungraded | |
| Robin, Seychelles Magpie- | Copsychus sechellarum | Ungraded | |
| Robin, Siberian Blue | Luscinia cyane | Mega | |
| Robin, Slaty | Peneothello cyanus | Ungraded | |
| Robin, Sooty | Turdus nigrescens | Ungraded | |
| Robin, Stewart Island | Petroica australis rakiura | Ungraded | |
| Robin, White-bellied Blue | Myiomela albiventris | Ungraded | |
| Robin, White-breasted | Eopsaltria georgiana | Ungraded | |
| Robin, White-browed | Poecilodryas superciliosa | Ungraded | |
| Robin, White-browed Bush | Tarsiger indicus | Ungraded | |
| Robin, White-throated | Irania gutturalis | Mega | |
| Robin-Chat, White-headed | Cossypha heinrichi | Ungraded | |
| Rockfowl, Grey-necked | Picathartes oreas | Ungraded | |
| Rockfowl, White-necked | Picathartes gymnocephalus | Ungraded | |
| Rock-jumper, Cape | Chaetops frenatus | Ungraded | |
| Rock-jumper, Drakensberg | Chaetops aurantius | Ungraded | |
| Rockrunner | Achaetops pycnopygius | Ungraded | |
| Roller, Abyssinian | Coracias abyssinicus | Ungraded | |
| Roller, Blue-bellied | Coracias cyanogaster | Ungraded | |
| Roller, Blue-throated | Eurystomus gularis | Ungraded | |
| Roller, Broad-billed | Eurystomus glaucurus | Ungraded | |
| Roller, Cuckoo | Leptosomus discolor | Ungraded | |
| Roller, European | Coracias garrulus | Rare | |
| Roller, Indian | Coracias benghalensis | Ungraded | |
| Roller, Lilac-breasted | Coracias caudatus | Ungraded | |
| Roller, Purple-winged | Coracias temminckii | Ungraded | |
| Roller, Racket-tailed | Coracias spatulatus | Ungraded | |
| Roller, Rufous-crowned | Coracias naevius | Ungraded | |
| Roller, Scaly Ground | Brachypteracias squamigera | Ungraded | |
| Roller, Short-legged Ground- | Brachypteracias leptosomus | Ungraded | |
| Rook | Corvus frugilegus | Common | |
| Rosefinch, Beautiful | Carpodacus pulcherrimus | Ungraded | |
| Rosefinch, Common | Carpodacus erythrinus | Scarce | |
| Rosefinch, Dark-breasted | Carpodacus nipalensis | Ungraded | |
| Rosefinch, Great | Carpodacus rubicilla | Ungraded | |
| Rosefinch, Long-tailed | Uragus sibiricus | Ungraded | |
| Rosefinch, Pallas's | Carpodacus roseus | Ungraded | |
| Rosefinch, Pink-browed | Carpodacus rodochroa | Ungraded | |
| Rosefinch, Red-mantled | Carpodacus rhodochlamys | Ungraded | |
| Rosefinch, Sinai | Carpodacus synoicus | Ungraded | |
| Rosefinch, Vinaceous | Carpodacus vinaceus | Ungraded | |
| Rosella, Crimson | Platycercus elegans | Ungraded | |
| Rosella, Eastern | Platycercus eximius | Ungraded | |
| Rosella, Green | Platycercus caledonicus | Ungraded | |
| Rosella, Northern | Platycercus venustus | Ungraded | |
| Rosella, Pale-headed | Platycercus adscitus | Ungraded | |
| Rosella, Western | Platycercus icterotis | Ungraded | |
| Ruby, Brazilian | Clytolaema rubricauda | Ungraded | |
| Rubythroat, Siberian | Luscinia calliope | Mega | |
| Rubythroat, White-tailed | Luscinia pectoralis | Ungraded | |
| Ruff | Philomachus pugnax | Common | |
| Rushbird, Wren-like | Phleocryptes melanops | Ungraded | |
| Sabrewing, Grey-breasted | Campylopterus largipennis | Ungraded | |
| Sabrewing, Violet | Campylopterus hemileucurus | Ungraded | |
| Sabrewing, White-tailed | Campylopterus ensipennis | Ungraded | |
| Saddleback | Philesturnus carunculatus | Ungraded | |
| Saddleback, North Island | Philesturnus rufusater | Ungraded | |
| Saltator, Black-headed | Saltator atriceps | Ungraded | |
| Saltator, Black-winged | Saltator atripennis | Ungraded | |
| Saltator, Buff-throated | Saltator maximus | Ungraded | |
| Saltator, Golden-billed | Saltator aurantiirostris | Ungraded | |
| Saltator, Greyish | Saltator coerulescens | Ungraded | |
| Saltator, Lesser Antillean | Saltator albicollis | Ungraded | |
| Saltator, Masked | Saltator cinctus | Ungraded | |
| Saltator, Orinocan | Saltator orenocensis | Ungraded | |
| Saltator, Rufous-bellied | Saltator rufiventris | Ungraded | |
| Saltator, Streaked | Saltator striatipectus | Ungraded | |
| Sanderling | Calidris alba | Common | |
| Sandgrouse sp. | Pterocles | Mega | |
| Sandgrouse, Black-bellied | Pterocles orientalis | Mega | |
| Sandgrouse, Black-faced | Pterocles decoratus | Ungraded | |
| Sandgrouse, Burchell's | Pterocles burchelli | Ungraded | |
| Sandgrouse, Chestnut-bellied | Pterocles exustus | Ungraded | |
| Sandgrouse, Crowned | Pterocles coronatus | Ungraded | |
| Sandgrouse, Double-banded | Pterocles bicinctus | Ungraded | |
| Sandgrouse, Four-banded | Pterocles quadricinctus | Ungraded | |
| Sandgrouse, Lichtenstein's | Pterocles lichtensteinii | Ungraded | |
| Sandgrouse, Madagascar | Pterocles personatus | Ungraded | |
| Sandgrouse, Namaqua | Pterocles namaqua | Ungraded | |
| Sandgrouse, Painted | Pterocles indicus | Ungraded | |
| Sandgrouse, Pallas's | Syrrhaptes paradoxus | Mega | |
| Sandgrouse, Pin-tailed | Pterocles alchata | Mega | |
| Sandgrouse, Spotted | Pterocles senegallus | Ungraded | |
| Sandgrouse, Tibetan | Syrrhaptes tibetanus | Ungraded | |
| Sandgrouse, Yellow-throated | Pterocles gutturalis | Ungraded | |
| Sandpiper sp. | Scolopacidae | Scarce | |
| Sandpiper, Baird's | Calidris bairdii | Rare | |
| Sandpiper, Broad-billed | Calidris falcinellus | Rare | |
| Sandpiper, Buff-breasted | Tryngites subruficollis | Scarce | |
| Sandpiper, Common | Actitis hypoleucos | Common | |
| Sandpiper, Curlew | Calidris ferruginea | Local | |
| Sandpiper, Green | Tringa ochropus | Common | |
| Sandpiper, Least | Calidris minutilla | Rare | |
| Sandpiper, Marsh | Tringa stagnatilis | Rare | |
| Sandpiper, Pectoral | Calidris melanotos | Scarce | |
| Sandpiper, Purple | Calidris maritima | Local | |
| Sandpiper, Rock | Calidris ptilocnemis | Ungraded | |
| Sandpiper, Semipalmated | Calidris pusilla | Rare | |
| Sandpiper, Semipalmated/Western | Calidris pusilla/mauri | Rare | |
| Sandpiper, Sharp-tailed | Calidris acuminata | Mega | |
| Sandpiper, Solitary | Tringa solitaria | Mega | |
| Sandpiper, Spoon-billed | Eurynorhynchus pygmeus | Ungraded | |
| Sandpiper, Spotted | Actitis macularius | Rare | |
| Sandpiper, Stilt | Calidris himantopus | Rare | |
| Sandpiper, Terek | Xenus cinereus | Rare | |
| Sandpiper, Upland | Bartramia longicauda | Mega | |
| Sandpiper, Western | Calidris mauri | Mega | |
| Sandpiper, White-rumped | Calidris fuscicollis | Scarce | |
| Sandpiper, Wood | Tringa glareola | Local | |
| Sapphire, Blue-chinned | Chlorestes notata | Ungraded | |
| Sapphire, Gilded | Hylocharis chrysura | Ungraded | |
| Sapphire, Golden-tailed | Chrysuronia oenone | Ungraded | |
| Sapphire, White-chinned | Hylocharis cyanus | Ungraded | |
| Sapphirewing, Great | Pterophanes cyanopterus | Ungraded | |
| Sapsucker, Red-breasted | Sphyrapicus ruber | Ungraded | |
| Sapsucker, Red-naped | Sphyrapicus nuchalis | Ungraded | |
| Sapsucker, Williamson's | Sphyrapicus thyroideus | Ungraded | |
| Sapsucker, Yellow-bellied | Sphyrapicus varius | Mega | |
| Saw-wing, Black | Psalidoprocne holomelaena | Ungraded | |
| Sawwing, Fanti | Psalidoprocne obscura | Ungraded | |
| Scaup | Aythya marila | Local | |
| Scaup, Lesser | Aythya affinis | Scarce | |
| Scaup, New Zealand | Aythya novaeseelandiae | Ungraded | |
| Schiffornis, Greenish | Schiffornis virescens | Ungraded | |
| Scimitar-babbler, Rusty-cheeked | Pomatorhinus erythrogenys | Ungraded | |
| Scimitarbill, Black | Rhinopomastus aterrimus | Ungraded | |
| Scimitar-bill, Common | Rhinopomastus cyanomelas | Ungraded | |
| Scoter, American White-winged | Melanitta deglandi deglandi | Mega | |
| Scoter, Black | Melanitta americana | Mega | |
| Scoter, Common | Melanitta nigra | Common | |
| Scoter, Stejneger's | Melanitta deglandi stejnegeri | Mega | |
| Scoter, Surf | Melanitta perspicillata | Scarce | |
| Scoter, Velvet | Melanitta fusca | Local | |
| Scoter, White-winged | Melanitta deglandi | Mega | |
| Screamer, Horned | Anhima cornuta | Ungraded | |
| Screamer, Northern | Chauna chavaria | Ungraded | |
| Screamer, Southern | Chauna torquata | Ungraded | |
| Screech-Owl, Tropical | Otus choliba | Ungraded | |
| Scrubfowl, Orange-footed | Megapodius reinwardt | Ungraded | |
| Scrub-jay, Island | Aphelocoma insularis | Ungraded | |
| Scrub-robin, White-browed | Erythropygia leucophrys | Ungraded | |
| Scrubwren, Tasmanian | Sericornis humilis | Ungraded | |
| Scythebill, Red-billed | Campylorhamphus trochilirostris | Ungraded | |
| Secretarybird | Sagittarius serpentarius | Ungraded | |
| Seedcracker, Black-bellied | Pyrenestes ostrinus | Ungraded | |
| Seedeater, Band-tailed | Catamenia analis | Ungraded | |
| Seedeater, Black-and-white | Sporophila luctuosa | Ungraded | |
| Seedeater, Black-bellied | Sporophila melanogaster | Ungraded | |
| Seedeater, Brown-rumped | Crithagra tristriata | Ungraded | |
| Seedeater, Chestnut-bellied | Sporophila castaneiventris | Ungraded | |
| Seedeater, Double-collared | Sporophila caerulescens | Ungraded | |
| Seedeater, Lined | Sporophila lineola | Ungraded | |
| Seedeater, Paramo | Catamenia homochroa | Ungraded | |
| Seedeater, Plain-colored | Catamenia inornata | Ungraded | |
| Seedeater, Plumbeous | Sporophila plumbea | Ungraded | |
| Seedeater, Principe | Crithagra rufobrunnea | Ungraded | |
| Seedeater, Reichenow's | Crithagra reichenowi | Ungraded | |
| Seedeater, Ruddy-breasted | Sporophila minuta | Ungraded | |
| Seedeater, Rusty-collared | Sporophila collaris | Ungraded | |
| Seedeater, Salvadori's | Serinus xantholaemus | Ungraded | |
| Seedeater, Streaky | Serinus striolatus | Ungraded | |
| Seedeater, Streaky-headed | Serinus gularis | Ungraded | |
| Seedeater, Variable | Sporophila corvina | Ungraded | |
| Seedeater, White-bellied | Sporophila leucoptera | Ungraded | |
| Seedeater, White-collared | Sporophila torqueola | Ungraded | |
| Seedeater, White-rumped | Serinus leucopygius | Ungraded | |
| Seedeater, Yellow-bellied | Sporophila nigricollis | Ungraded | |
| Seedsnipe, Least | Thinocorus rumicivorus | Ungraded | |
| Seedsnipe, Rufous-bellied | Attagis gayi | Ungraded | |
| Seriema, Red-legged | Cariama cristata | Ungraded | |
| Serin | Serinus serinus | Scarce | |
| Serin, Ankober | Crithagra ankoberensis | Ungraded | |
| Serin, Arabian | Crithagra rothschildi | Ungraded | |
| Serin, Red-fronted | Serinus pusillus | Ungraded | |
| Serin, Syrian | Serinus syriacus | Ungraded | |
| Serin, Yemen | Crithagra menachensis | Ungraded | |
| Setophaga sp. | Setophaga sp. | Mega | |
| Shag | Phalacrocorax aristotelis | Local | |
| Shag, Antarctic | Leucocarbo bransfieldensis | Ungraded | |
| Shag, Bronze | Leucocarbo chalconotus | Ungraded | |
| Shag, Chatham | Leucocarbo onslowi | Ungraded | |
| Shag, Crozet | Leucocarbo melanogenis | Ungraded | |
| Shag, Imperial | Phalacrocorax atriceps albiventer | Ungraded | |
| Shag, King | Leucocarbo atriceps albiventer | Ungraded | |
| Shag, Rock | Phalacrocorax magellanicus | Ungraded | |
| Shag, Rough-faced | Leucocarbo carunculatus | Ungraded | |
| Shag, South Georgia | Leucocarbo georgianus | Ungraded | |
| Shag, Spotted | Phalacrocorax punctatus | Ungraded | |
| Shama, Andaman | Copsychus albiventris | Ungraded | |
| Shama, White-crowned | Copsychus stricklandii | Ungraded | |
| Shama, White-rumped | Copsychus malabaricus | Ungraded | |
| Shama, White-vented | Copsychus niger | Ungraded | |
| Sheartail, Mexican | Doricha eliza | Ungraded | |
| Shearwater sp. | Puffinus sp. | Ungraded | |
| Shearwater, (Southern) Little | Puffinus assimilis | Mega | |
| Shearwater, Audubon's | Puffinus lherminieri | Mega | |
| Shearwater, Balearic | Puffinus mauretanicus | Local | |
| Shearwater, Barolo | Puffinus baroli | Mega | |
| Shearwater, Buller's | Puffinus bulleri | Ungraded | |
| Shearwater, Cape Verde | Calonectris edwardsii | Ungraded | |
| Shearwater, Cory's | Calonectris diomedea | Scarce | |
| Shearwater, Cory's/Great | Calonectris diomedea/Puffinus gavis | Scarce | |
| Shearwater, Flesh-footed | Puffinus carneipes | Ungraded | |
| Shearwater, Fluttering | Puffinus gavia | Ungraded | |
| Shearwater, Galapagos | Puffinus subalaris | Ungraded | |
| Shearwater, Great | Puffinus gravis | Scarce | |
| Shearwater, Hutton's | Puffinus huttoni | Ungraded | |
| Shearwater, Manx | Puffinus puffinus | Local | |
| Shearwater, Pink-footed | Puffinus creatopus | Ungraded | |
| Shearwater, Scopoli's | Calonectris diomedea diomedea | Mega | |
| Shearwater, Short-tailed | Puffinus tenuirostris | Mega | |
| Shearwater, Sooty | Puffinus griseus | Local | |
| Shearwater, Streaked | Calonectris leucomelas | Ungraded | |
| Shearwater, Wedge-tailed | Puffinus pacificus | Ungraded | |
| Shearwater, Yelkouan | Puffinus yelkouan | Mega | |
| Sheathbill, Black-faced | Chionis minor | Ungraded | |
| Sheathbill, Snowy | Chionis albus | Ungraded | |
| Shelduck | Tadorna tadorna | Common | |
| Shelduck, Australian | Tadorna tadornoides | Ungraded | |
| Shelduck, Paradise | Tadorna variegata | Ungraded | |
| Shelduck, Raja | Tadorna radjah | Ungraded | |
| Shelduck, Ruddy | Tadorna ferruginea | Scarce | |
| Shelduck, South African | Tadorna cana | Ungraded | |
| Shikra | Accipiter badius | Ungraded | |
| Shoebill | Balaeniceps rex | Ungraded | |
| Shortwing, Lesser | Brachypteryx leucophris | Ungraded | |
| Shortwing, White-browed | Brachypteryx montana | Ungraded | |
| Shoveler | Anas clypeata | Common | |
| Shoveler, Australasian | Anas rhynchotis | Ungraded | |
| Shoveler, Cape | Anas smithii | Ungraded | |
| Shrike sp. | Lanius | Rare | |
| Shrike, Balearic Woodchat | Lanius senator badius | Rare | |
| Shrike, Bar-winged Flycatcher- | Hemipus picatus | Ungraded | |
| Shrike, Bay-backed | Lanius vittatus | Ungraded | |
| Shrike, Black-faced Cuckoo- | Coracina novaehollandiae | Ungraded | |
| Shrike, Brown | Lanius cristatus | Mega | |
| Shrike, Bull-headed | Lanius bucephalus | Ungraded | |
| Shrike, Burmese | Lanius collurioides | Ungraded | |
| Shrike, Chinese Grey | Lanius sphenocercus | Ungraded | |
| Shrike, Crimson-breasted | Laniarius atrococcineus | Ungraded | |
| Shrike, Daurian | Lanius isabellinus isabellinus | Rare | |
| Shrike, Emin's | Lanius gubernator | Ungraded | |
| Shrike, Great Grey | Lanius excubitor | Scarce | |
| Shrike, Grey-backed | Lanius tephronotus | Ungraded | |
| Shrike, Grey-backed Fiscal | Lanius excubitoroides | Ungraded | |
| Shrike, Isabelline | Lanius isabellinus | Rare | |
| Shrike, Lesser Grey | Lanius minor | Rare | |
| Shrike, Loggerhead | Lanius ludovicianus | Ungraded | |
| Shrike, Long-tailed | Lanius schach | Mega | |
| Shrike, Mackinnon's | Lanius mackinnoni | Ungraded | |
| Shrike, Magpie | Corvinella melanoleuca | Ungraded | |
| Shrike, Masked | Lanius nubicus | Mega | |
| Shrike, Northern | Lanius excubitor borealis | Mega | |
| Shrike, Northern (ssp. sibiricus) | Lanius excubitor sibiricus | Mega | |
| Shrike, Northern White-crowned | Eurocephalus ruppelli | Ungraded | |
| Shrike, Red-backed | Lanius collurio | Scarce | |
| Shrike, Red-shouldered Cuckoo- | Campephaga phoenicea | Ungraded | |
| Shrike, Southern Grey | Lanius meridionalis | Mega | |
| Shrike, Steppe Grey | Lanius meridionalis pallidirostris | Mega | |
| Shrike, Tiger | Lanius tigrinus | Ungraded | |
| Shrike, Turkestan | Lanius isabellinus phoenicuroides | Rare | |
| Shrike, White-breasted Cuckoo- | Coracina pectoralis | Ungraded | |
| Shrike, White-crowned | Eurocephalus anguitimens | Ungraded | |
| Shrike, White-tailed | Lanioturdus torquatus | Ungraded | |
| Shrike, Woodchat | Lanius senator | Scarce | |
| Shrike, Yellow-billed | Corvinella corvina | Ungraded | |
| Shrikebill, Southern | Clytorhynchus pachycephaloides | Ungraded | |
| Shrike-flycatcher, Black-and-white | Bias musicus | Ungraded | |
| Shrike-Thrush, Bower's | Colluricincla boweri | Ungraded | |
| Shrikethrush, Grey | Colluricincla harmonica | Ungraded | |
| Shrike-tit, Crested | Falcunculus frontatus | Ungraded | |
| Shriketit, Western | Falcunculus frontatus leucogaster | Ungraded | |
| Shrike-Tyrant, Great | Agriornis lividus | Ungraded | |
| Shrike-Tyrant, Grey-bellied | Agriornis micropterus | Ungraded | |
| Sibia, Black-headed | Heterophasia desgodinsi | Ungraded | |
| Sibia, Dark-backed | Heterophasia melanoleuca | Ungraded | |
| Sibia, Rufous | Heterophasia capistrata | Ungraded | |
| Sicklebill, Brown | Epimachus meyeri | Ungraded | |
| Sicklebill, White-tipped | Eutoxeres aquila | Ungraded | |
| Silverbill, African | Euodice cantans | Ungraded | |
| Silverbill, Indian | Lonchura malabarica | Ungraded | |
| Silverbird | Empidornis semipartitus | Ungraded | |
| Silvereye | Zosterops lateralis | Ungraded | |
| Siskin | Carduelis spinus | Common | |
| Siskin, Black | Carduelis atrata | Ungraded | |
| Siskin, Black-chinned | Carduelis barbata | Ungraded | |
| Siskin, Black-headed | Carduelis notata | Ungraded | |
| Siskin, Ethiopian | Serinus nigriceps | Ungraded | |
| Siskin, Hooded | Carduelis magellanica | Ungraded | |
| Siskin, Pine | Carduelis pinus | Ungraded | |
| Siskin, Red | Carduelis cucullata | Ungraded | |
| Siskin, Yellow-bellied | Carduelis xanthogastra | Ungraded | |
| Sittella, Varied | Daphoenositta chrysoptera | Ungraded | |
| Skimmer, African | Rynchops flavirostris | Ungraded | |
| Skimmer, Black | Rynchops niger | Mega | |
| Skimmer, Indian | Rynchops albicollis | Ungraded | |
| Skua sp. | Stercorarius | Scarce | |
| Skua, Arctic | Stercorarius parasiticus | Common | |
| Skua, Brown or Southern | Stercorarius antarcticus | Mega | |
| Skua, Chilean | Stercorarius chilensis | Ungraded | |
| Skua, Great | Stercorarius skua | Local | |
| Skua, Long-tailed | Stercorarius longicaudus | Scarce | |
| Skua, Pomarine | Stercorarius pomarinus | Local | |
| Skua, South Polar | Stercorarius maccormicki | Mega | |
| Skua, Tristan | Stercorarius antarcticus hamiltoni | Ungraded | |
| Smew | Mergellus albellus | Local | |
| Smew x Goldeneye | Mergellus albellus x Bucephala clangula | Ungraded | |
| Snipe sp. | Gallinago sp. | Scarce | |
| Snipe, Common | Gallinago gallinago | Common | |
| Snipe, Faeroe Common | Gallinago gallinago faeroeensis | Ungraded | |
| Snipe, Great | Gallinago media | Rare | |
| Snipe, Jack | Lymnocryptes minimus | Local | |
| Snipe, Latham's | Gallinago hardwickii | Ungraded | |
| Snipe, Magellanic | Gallinago paraguaiae magellanica | Ungraded | |
| Snipe, Painted | Rostratula benghalensis | Ungraded | |
| Snipe, Pintail | Gallinago stenura | Ungraded | |
| Snipe, South American | Gallinago paraguaiae | Ungraded | |
| Snipe, Swinhoe's | Gallinago megala | Mega | |
| Snipe, Wilson's | Gallinago delicata | Mega | |
| Snowcap | Microchera albocoronata | Ungraded | |
| Snowcock, Caspian | Tetraogallus caspius | Ungraded | |
| Snowcock, Caucasian | Tetraogallus caucasicus | Ungraded | |
| Snowfinch, White-winged | Montifringilla nivalis | Mega | |
| Solitaire, Andean | Myadestes ralloides | Ungraded | |
| Solitaire, Black | Entomodestes coracinus | Ungraded | |
| Solitaire, Black-faced | Myadestes melanops | Ungraded | |
| Solitaire, Townsend's | Myadestes townsendi | Ungraded | |
| Sora | Porzana carolina | Mega | |
| sp, Catharus | Catharus | Rare | |
| Spadebill, Golden-crowned | Platyrinchus coronatus | Ungraded | |
| Spadebill, White-crested | Platyrinchus platyrhynchos | Ungraded | |
| Spadebill, White-throated | Platyrinchus mystaceus | Ungraded | |
| Sparrow, American Tree | Spizella arborea | Ungraded | |
| Sparrow, Arabian Golden | Passer euchlorus | Ungraded | |
| Sparrow, Bachman's | Peucaea aestivalis | Ungraded | |
| Sparrow, Black-striped | Arremonops conirostris | Ungraded | |
| Sparrow, Black-throated | Amphispiza bilineata | Ungraded | |
| Sparrow, Brewer's | Spizella breweri | Ungraded | |
| Sparrow, Cape | Passer melanurus | Ungraded | |
| Sparrow, Cassin's | Peucaea cassinii | Ungraded | |
| Sparrow, Chestnut | Passer eminibey | Ungraded | |
| Sparrow, Chipping | Spizella passerina | Ungraded | |
| Sparrow, Clay-colored | Spizella pallida | Ungraded | |
| Sparrow, Dead Sea | Passer moabiticus | Ungraded | |
| Sparrow, Desert | Passer simplex | Ungraded | |
| Sparrow, Field | Spizella pusilla | Ungraded | |
| Sparrow, Fox | Passerella iliaca | Mega | |
| Sparrow, Golden-crowned | Zonotrichia atricapilla | Mega | |
| Sparrow, Golden-winged | Arremon schlegeli | Ungraded | |
| Sparrow, Grasshopper | Ammodramus savannarum | Ungraded | |
| Sparrow, Grassland | Ammodramus humeralis | Ungraded | |
| Sparrow, Half-collared | Arremon semitorquatus | Ungraded | |
| Sparrow, Harris's | Zonotrichia querula | Ungraded | |
| Sparrow, Henslow's | Ammodramus henslowii | Ungraded | |
| Sparrow, House | Passer domesticus | Common | |
| Sparrow, Iago | Passer iagoensis | Ungraded | |
| Sparrow, Italian | Passer domesticus italiae | Ungraded | |
| Sparrow, Java | Padda oryzivora | Ungraded | |
| Sparrow, Kenya | Passer rufocinctus | Ungraded | |
| Sparrow, Lark | Chondestes grammacus | Mega | |
| Sparrow, Lincoln's | Melospiza lincolnii | Mega | |
| Sparrow, Northern Grey-headed | Passer griseus | Ungraded | |
| Sparrow, Olive | Arremonops rufivirgatus | Ungraded | |
| Sparrow, Pale Rock | Petronia brachydactyla | Ungraded | |
| Sparrow, Rock | Petronia petronia | Mega | |
| Sparrow, Rufous | Passer motitensis | Ungraded | |
| Sparrow, Rufous-collared | Zonotrichia capensis | Ungraded | |
| Sparrow, Russet | Passer rutilans | Ungraded | |
| Sparrow, Saffron-billed | Arremon flavirostris | Ungraded | |
| Sparrow, Saltmarsh Sharp-tailed | Ammodramus caudacutus | Ungraded | |
| Sparrow, Savannah | Passerculus sandwichensis | Mega | |
| Sparrow, Saxaul | Passer ammodendri | Ungraded | |
| Sparrow, Seaside | Ammodramus maritimus | Ungraded | |
| Sparrow, Sind | Passer pyrrhonotus | Ungraded | |
| Sparrow, Song | Melospiza melodia | Mega | |
| Sparrow, Southern Grey-headed | Passer diffusus | Ungraded | |
| Sparrow, Spanish | Passer hispaniolensis | Mega | |
| Sparrow, Spanish x House | Passer hispaniola x domesticus | Ungraded | |
| Sparrow, Stripe-headed | Peucaea ruficauda | Ungraded | |
| Sparrow, Sudan Golden | Passer luteus | Ungraded | |
| Sparrow, Swainson's | Passer swainsonii | Ungraded | |
| Sparrow, Swamp | Melospiza georgiana | Ungraded | |
| Sparrow, Tocuyo | Arremonops tocuyensis | Ungraded | |
| Sparrow, Tree | Passer montanus | Common | |
| Sparrow, Vesper | Pooecetes gramineus | Ungraded | |
| Sparrow, White-crowned | Zonotrichia leucophrys | Mega | |
| Sparrow, White-eared Ground | Melozone leucotis | Ungraded | |
| Sparrow, White-throated | Zonotrichia albicollis | Rare | |
| Sparrow, Yellow-browed | Ammodramus aurifrons | Ungraded | |
| Sparrow, Zapata | Torreornis inexpectata | Ungraded | |
| Sparrowhawk | Accipiter nisus | Common | |
| Sparrowhawk, Black | Accipiter melanoleucus | Ungraded | |
| Sparrowhawk, Collared | Accipiter cirrhocephalus | Ungraded | |
| Sparrowhawk, Japanese | Accipiter gularis | Ungraded | |
| Sparrowhawk, Levant | Accipiter brevipes | Ungraded | |
| Sparrowhawk, Little | Accipiter minullus | Ungraded | |
| Sparrowhawk, Madagascar | Accipiter madagascariensis | Ungraded | |
| Sparrow-Lark, Fischer's | Eremopterix leucopareia | Ungraded | |
| Sparrows, snowfinches and allies | Passeridae | Ungraded | |
| Spatuletail, Marvellous | Loddigesia mirabilis | Ungraded | |
| Speirops, Principe | Zosterops leucophaeus | Ungraded | |
| Speirops, Sao Tome | Zosterops lugubris | Ungraded | |
| Spiderhunter, Bornean | Arachnothera everetti | Ungraded | |
| Spiderhunter, Little | Arachnothera longirostra | Ungraded | |
| Spiderhunter, Streaked | Arachnothera magna | Ungraded | |
| Spinebill, Eastern | Acanthorhynchus tenuirostris | Ungraded | |
| Spinebill, Western | Acanthorhynchus superciliosus | Ungraded | |
| Spinetail, Azara's | Synallaxis azarae | Ungraded | |
| Spinetail, Chotoy | Schoeniophylax phryganophilus | Ungraded | |
| Spinetail, Cinereous-breasted | Synallaxis hypospodia | Ungraded | |
| Spinetail, Hoary-throated | Synallaxis kollari | Ungraded | |
| Spinetail, Mottled | Telacanthura ussheri | Ungraded | |
| Spinetail, Pale-breasted | Synallaxis albescens | Ungraded | |
| Spinetail, Red-faced | Cranioleuca erythrops | Ungraded | |
| Spinetail, Slaty | Synallaxis brachyura | Ungraded | |
| Spinetail, Sooty-fronted | Synallaxis frontalis | Ungraded | |
| Spinetail, Stripe-breasted | Synallaxis cinnamomea | Ungraded | |
| Spinetail, Stripe-crowned | Cranioleuca pyrrhophia | Ungraded | |
| Spinetail, Sulphur-throated | Cranioleuca sulphurifera | Ungraded | |
| Spinetail, Yellow-chinned | Certhiaxis cinnamomea | Ungraded | |
| Spoonbill | Platalea leucorodia | Local | |
| Spoonbill, African | Platalea alba | Ungraded | |
| Spoonbill, Black-faced | Platalea minor | Ungraded | |
| Spoonbill, Roseate | Platalea ajaja | Ungraded | |
| Spoonbill, Royal | Platalea regia | Ungraded | |
| Spoonbill, Yellow-billed | Platalea flavipes | Ungraded | |
| Spurfowl, Grey-breasted | Pternistis rufopictus | Ungraded | |
| Spurfowl, Hartlaub's | Pternistis hartlaubi | Ungraded | |
| Spurfowl, Natal | Pternistis natalensis | Ungraded | |
| Spurfowl, Painted | Galloperdix lunulata | Ungraded | |
| Spurfowl, Red-necked | Francolinus afer | Ungraded | |
| Spurfowl, Swainson's | Pternistis swainsonii | Ungraded | |
| Spurfowl, Yellow-necked | Pternistis leucoscepus | Ungraded | |
| Starfrontlet, Buff-winged | Coeligena lutetiae | Ungraded | |
| Starfrontlet, Dusky | Coeligena orina | Ungraded | |
| Starling | Sturnus vulgaris | Common | |
| Starling, Ashy | Cosmopsarus unicolor | Ungraded | |
| Starling, Asian Glossy | Aplonis panayensis | Ungraded | |
| Starling, Asian Pied | Gracupica contra | Ungraded | |
| Starling, Bali | Leucopsar rothschildi | Ungraded | |
| Starling, Black-bellied | Notopholia corrusca | Ungraded | |
| Starling, Black-collared | Gracupica nigricollis | Ungraded | |
| Starling, Brahminy | Sturnia pagodarum | Ungraded | |
| Starling, Bristle-crowned | Onychognathus salvadorii | Ungraded | |
| Starling, Bronze-tailed Glossy- | Lamprotornis chalcurus | Ungraded | |
| Starling, Burchell's Glossy- | Lamprotornis australis | Ungraded | |
| Starling, Chestnut-bellied | Lamprotornis pulcher | Ungraded | |
| Starling, Chestnut-tailed | Sturnia malabarica | Ungraded | |
| Starling, Chestnut-winged | Onychognathus fulgidus | Ungraded | |
| Starling, Copper-tailed | Hylopsar cupreocauda | Ungraded | |
| Starling, Daurian | Agropsar sturninus | Ungraded | |
| Starling, Fischer's | Spreo fischeri | Ungraded | |
| Starling, Golden-breasted | Cosmopsarus regius | Ungraded | |
| Starling, Greater Blue-eared Glossy- | Lamprotornis chalybaeus | Ungraded | |
| Starling, Grey-backed | Sturnia sinensis | Ungraded | |
| Starling, Hildebrandt's | Lamprotornis hildebrandti | Ungraded | |
| Starling, Lesser Blue-eared Glossy- | Lamprotornis chloropterus | Ungraded | |
| Starling, Long-tailed Glossy- | Lamprotornis caudatus | Ungraded | |
| Starling, Magpie | Speculipastor bicolor | Ungraded | |
| Starling, Metallic | Aplonis metallica | Ungraded | |
| Starling, Pale-winged | Onychognathus nabouroup | Ungraded | |
| Starling, Pied | Sprio bicolor | Ungraded | |
| Starling, Principe | Lamprotornis ornatus | Ungraded | |
| Starling, Purple | Lamprotornis purpureus | Ungraded | |
| Starling, Red-billed | Spodiopsar sericeus | Ungraded | |
| Starling, Red-shouldered Glossy- | Lamprotornis nitens | Ungraded | |
| Starling, Red-winged | Onychognathus morio | Ungraded | |
| Starling, Rose-coloured | Pastor roseus | Scarce | |
| Starling, Rüppell's | Lamprotornis purpuroptera | Ungraded | |
| Starling, Shelley's | Lamprotornis shelleyi | Ungraded | |
| Starling, Spotless | Sturnus unicolor | Mega | |
| Starling, Superb | Lamprotornis superbus | Ungraded | |
| Starling, Vinous-breasted | Acridotheres burmannicus | Ungraded | |
| Starling, Violet-backed | Cinnyricinclus leucogaster | Ungraded | |
| Starling, Violet-hooded | Aplonis circumscripta | Ungraded | |
| Starling, Wattled | Creatophora cinerea | Ungraded | |
| Starling, White-cheeked | Spodiopsar cineraceus | Ungraded | |
| Starling, White-crowned | Spreo albicappillus | Ungraded | |
| Starling, White-faced | Sturnornis albofrontatus | Ungraded | |
| Starling, White-headed | Sturnus erythropygius | Ungraded | |
| Starlings | Sturnidae | Ungraded | |
| Starthroat, Long-billed | Heliomaster longirostris | Ungraded | |
| Starthroat, Plain-capped | Heliomaster constantii | Ungraded | |
| Stilt, Banded | Cladorhynchus leucocephalus | Ungraded | |
| Stilt, Black | Himantopus novaezelandiae | Ungraded | |
| Stilt, Black-necked | Himantopus mexicanus | Ungraded | |
| Stilt, Black-winged | Himantopus himantopus | Rare | |
| Stilt, Pied | Himantopus leucocephalus | Ungraded | |
| Stint, Little | Calidris minuta | Local | |
| Stint, Long-toed | Calidris subminuta | Mega | |
| Stint, Red-necked | Calidris ruficollis | Mega | |
| Stint, Temminck's | Calidris temminckii | Scarce | |
| Stitchbird | Notiomystis cincta | Ungraded | |
| Stonechat, African | Saxicola axillaris | Ungraded | |
| Stonechat, Canary Islands | Saxicola dacotiae | Ungraded | |
| Stonechat, Caspian | Saxicola maurus variegatus | Mega | |
| Stonechat, European | Saxicola rubicola | Common | |
| Stonechat, Reunion | Saxicola tectes | Ungraded | |
| Stonechat, Siberian | Saxicola maurus | Rare | |
| Stonechat, Stejneger's | Saxicola stejnegeri | Mega | |
| Stonechat, White-tailed | Saxicola leucura | Ungraded | |
| Stone-curlew, Beach | Esacus magnirostris | Ungraded | |
| Stone-curlew, Indian | Burhinus indicus | Ungraded | |
| Stork sp. | Ciconiidae | Rare | |
| Stork, Abdim's | Ciconia abdimii | Ungraded | |
| Stork, African Open-billed | Anastomus lamelligerus | Ungraded | |
| Stork, Black | Ciconia nigra | Rare | |
| Stork, Black-necked | Ephippiorhynchus asiaticus | Ungraded | |
| Stork, Maguari | Ciconia maguari | Ungraded | |
| Stork, Marabou | Leptoptilos crumenifer | Ungraded | |
| Stork, Milky | Mycteria cinerea | Ungraded | |
| Stork, Painted | Mycteria leucocephalus | Ungraded | |
| Stork, Saddle-billed | Ephippiorhynchus senegalensis | Ungraded | |
| Stork, Storm's | Ciconia stormi | Ungraded | |
| Stork, White | Ciconia ciconia | Scarce | |
| Stork, Wood | Mycteria americana | Ungraded | |
| Stork, Woolly-necked | Ciconia episcopus | Ungraded | |
| Stork, Yellow-billed | Mycteria ibis | Ungraded | |
| Storm-petrel sp., Band-rumped | Oceanodroma castro/jabejabe/monteiroi | Ungraded | |
| Storm-petrel, Black | Oceanodroma melania | Mega | |
| Storm-petrel, Black-bellied | Fregetta tropica | Mega | |
| Storm-petrel, Black-bellied/White-bellied | Fregetta grallaria/tropica | Ungraded | |
| Storm-petrel, European | Hydrobates pelagicus | Local | |
| Storm-petrel, Fork-tailed | Oceanodroma furcata | Ungraded | |
| Storm-petrel, Leach's | Oceanodroma leucorhoa | Scarce | |
| Storm-petrel, Madeiran | Oceanodroma castro | Mega | |
| Storm-petrel, Matsudaira's | Oceanodroma matsudairae | Mega | |
| Storm-petrel, Monteiro's | Oceanodroma monteiroi | Ungraded | |
| Storm-petrel, Swinhoe's | Oceanodroma monorhis | Mega | |
| Storm-Petrel, Wedge-rumped | Oceanodroma tethys | Ungraded | |
| Storm-petrel, White-bellied | Fregetta grallaria | Ungraded | |
| Storm-petrel, White-faced | Pelagodroma marina | Mega | |
| Storm-petrel, White-vented | Oceanites gracilis | Ungraded | |
| Storm-petrel, Wilson's | Oceanites oceanicus | Scarce | |
| Streamertail, Black-billed | Trochilus scitulus | Ungraded | |
| Streamertail, Red-billed | Trochilus polytmus | Ungraded | |
| Strix | Strix | Ungraded | |
| Sugarbird, Cape | Promerops cafer | Ungraded | |
| Sugarbird, Gurney's | Promerops gurneyi | Ungraded | |
| Sunangel, Amethyst-throated | Heliangelus amethysticollis | Ungraded | |
| Sunangel, Gorgeted | Heliangelus strophianus | Ungraded | |
| Sunangel, Orange-throated | Heliangelus mavors | Ungraded | |
| Sunangel, Tourmaline | Heliangelus exortis | Ungraded | |
| Sunbeam, Black-hooded | Aglaeactis pamela | Ungraded | |
| Sunbeam, Shining | Aglaeactis cupripennis | Ungraded | |
| Sunbird sp. | Nectariniidae sp. | Ungraded | |
| Sunbird, Amethyst | Nectarinia amethystina | Ungraded | |
| Sunbird, Bannerman's | Cyanomitra bannermani | Ungraded | |
| Sunbird, Beautiful | Nectarinia pulchella | Ungraded | |
| Sunbird, Black | Leptocoma sericea | Ungraded | |
| Sunbird, Black-throated | Aethopyga saturata | Ungraded | |
| Sunbird, Blue-headed | Nectarinia alinae | Ungraded | |
| sunbird, Bohol | Aethopyga decorosa | Ungraded | |
| Sunbird, Bronze | Nectarinia kilimensis | Ungraded | |
| Sunbird, Brown-throated | Anthreptes malacensis | Ungraded | |
| Sunbird, Buff-throated | Chalcomitra adelberti | Ungraded | |
| Sunbird, Cameroon | Cyanomitra oritis | Ungraded | |
| Sunbird, Collared | Anthreptes collaris | Ungraded | |
| Sunbird, Copper | Nectarinia cuprea | Ungraded | |
| Sunbird, Copper-throated | Nectarinia calcostetha | Ungraded | |
| Sunbird, Crimson | Aethopyga siparaja | Ungraded | |
| Sunbird, Crimson-backed | Nectarinia minima | Ungraded | |
| Sunbird, Dusky | Cinnyris fuscus | Ungraded | |
| Sunbird, Eastern Double-collared | Cinnyris mediocris | Ungraded | |
| Sunbird, Eastern Violet-backed | Anthreptes orientalis | Ungraded | |
| Sunbird, Fire-tailed | Aethopyga ignicauda | Ungraded | |
| Sunbird, Fork-tailed | Aethopyga christinae | Ungraded | |
| Sunbird, Golden-winged | Nectarinia reichenowi | Ungraded | |
| Sunbird, Greater Double-collared | Cinnyris afer | Ungraded | |
| Sunbird, Green-headed | Nectarinia verticalis | Ungraded | |
| Sunbird, Green-tailed | Aethopyga nipalensis | Ungraded | |
| Sunbird, Grey | Cyanomitra veroxii | Ungraded | |
| Sunbird, Grey-throated | Anthreptes griseigularis | Ungraded | |
| Sunbird, Hunter's | Nectarinia hunteri | Ungraded | |
| Sunbird, Johanna's | Cinnyris johannae | Ungraded | |
| Sunbird, Loten's | Nectarinia lotenia | Ungraded | |
| Sunbird, Malachite | Nectarinia famosa | Ungraded | |
| Sunbird, Marico | Nectarinia mariquensis | Ungraded | |
| Sunbird, Miombo Double-collared | Cinnyris manoensis | Ungraded | |
| Sunbird, Mouse-brown | Anthreptes gabonicus | Ungraded | |
| Sunbird, Mrs Gould's | Aethopyga gouldiae | Ungraded | |
| Sunbird, Newton's | Nectarinia newtonii | Ungraded | |
| Sunbird, Nile Valley | Hedydipna metallicus | Ungraded | |
| Sunbird, Northern Double-collared | Nectarinia preussi | Ungraded | |
| Sunbird, Olive | Nectarinia olivacea | Ungraded | |
| Sunbird, Olive-backed | Cinnyris jugularis | Ungraded | |
| Sunbird, Olive-bellied | Cinnyris chloropygius | Ungraded | |
| Sunbird, Orange-breasted | Anthobaphes violacea | Ungraded | |
| Sunbird, Palestine | Cinnyris osea | Ungraded | |
| Sunbird, Principe | Nectarinia hartlaubii | Ungraded | |
| Sunbird, Purple | Nectarinia asiatica | Ungraded | |
| Sunbird, Purple-banded | Nectarinia bifasciata | Ungraded | |
| Sunbird, Purple-rumped | Nectarinia zeylonica | Ungraded | |
| Sunbird, Pygmy | Hedydipna platura | Ungraded | |
| Sunbird, Red-chested | Nectarinia erythrocerca | Ungraded | |
| Sunbird, Reichenbach's | Anabathmis reichenbachii | Ungraded | |
| Sunbird, Scarlet-chested | Nectarinia senegalensis | Ungraded | |
| Sunbird, Seychelles | Cinnyris dussumieri | Ungraded | |
| Sunbird, Shelley's | Nectarinia shelleyi | Ungraded | |
| Sunbird, Shining | Cinnyris habessinicus | Ungraded | |
| Sunbird, Souimanga | Nectarinia sovimanga | Ungraded | |
| Sunbird, Southern Double-collared | Cinnyris chalybeus | Ungraded | |
| Sunbird, Splendid | Nectarinia coccinigaster | Ungraded | |
| Sunbird, Tacazze | Nectarinia tacazze | Ungraded | |
| Sunbird, Variable | Nectarinia venusta | Ungraded | |
| Sunbird, Vigors's | Aethopyga vigorsii | Ungraded | |
| Sunbird, White-bellied | Cinnyris talatala | Ungraded | |
| Sunbird-Asity, Yellow-bellied | Neodrepanis hypoxantha | Ungraded | |
| Sunbittern | Eurypyga helias | Ungraded | |
| Sungrebe | Heliornis fulica | Ungraded | |
| Surfbird | Aphriza virgata | Ungraded | |
| Swallow | Hirundo rustica | Common | |
| Swallow, American Barn | Hirundo rustica erythrogaster | Ungraded | |
| Swallow, Ashy Wood- | Artamus fuscus | Ungraded | |
| Swallow, Asian Red-rumped | Cecropis daurica daurica | Ungraded | |
| Swallow, Black-collared | Atticora melanoleuca | Ungraded | |
| Swallow, Blue-and-white | Notiochelidon cyanoleuca | Ungraded | |
| Swallow, Cave | Hirundo fulva | Ungraded | |
| Swallow, Chestnut-collared | Petrochelidon rufocollaris | Ungraded | |
| Swallow, Chilean | Tachycineta leucopyga | Ungraded | |
| Swallow, Cliff | Petrochelidon pyrrhonota | Mega | |
| Swallow, Dusky Wood- | Artamus cyanopterus | Ungraded | |
| Swallow, Ethiopian | Hirundo aethiopica | Ungraded | |
| Swallow, Greater Striped | Hirundo cucullata | Ungraded | |
| Swallow, Hill | Hirundo domicola | Ungraded | |
| Swallow, Lesser Striped | Hirundo abyssinica | Ungraded | |
| Swallow, Levant Barn | Hirundo rustica transitiva | Ungraded | |
| Swallow, Mangrove | Tachycineta albilinea | Ungraded | |
| Swallow, Mosque | Hirundo senegalensis | Ungraded | |
| Swallow, Northern Rough-winged | Stelgidopteryx serripennis | Mega | |
| Swallow, Pacific | Hirundo tahitica | Ungraded | |
| Swallow, Pied-winged | Hirundo leucosoma | Ungraded | |
| Swallow, Preuss's Cliff | Petrochelidon preussi | Ungraded | |
| Swallow, Red-breasted | Cecropis semirufa | Ungraded | |
| Swallow, Red-chested | Hirundo lucida | Ungraded | |
| Swallow, Red-rumped | Cecropis daurica | Scarce | |
| Swallow, Southern Rough-winged | Stelgidopteryx ruficollis | Ungraded | |
| Swallow, Sri Lanka | Cecropis hyperythra | Ungraded | |
| Swallow, Streak-throated | Hirundo fluvicola | Ungraded | |
| Swallow, Tree | Tachycineta bicolor | Mega | |
| Swallow, Violet-green | Tachycineta thalassina | Ungraded | |
| Swallow, Welcome | Hirundo neoxena | Ungraded | |
| Swallow, White-breasted Wood- | Artamus leucorhynchus | Ungraded | |
| Swallow, White-tailed | Hirundo megaensis | Ungraded | |
| Swallow, White-throated | Hirundo albigularis | Ungraded | |
| Swallow, White-throated Blue | Hirundo nigrita | Ungraded | |
| Swallow, White-winged | Tachycineta albiventer | Ungraded | |
| Swallow, Wire-tailed | Hirundo smithii | Ungraded | |
| Swallow-wing | Chelidoptera tenebrosa | Ungraded | |
| Swamphen, African | Porphyrio madagascariensis | Ungraded | |
| Swamphen, Grey-headed | Porphyrio poliocephalus | Ungraded | |
| Swamphen, Western | Porphyrio porphyrio bellus | Ungraded | |
| Swan, Bewick's | Cygnus columbianus bewickii | Local | |
| Swan, Black | Cygnus atratus | Ungraded | |
| Swan, Black-necked | Cygnus melancoryphus | Ungraded | |
| Swan, Coscoroba | Coscoroba coscoroba | Ungraded | |
| Swan, Mute | Cygnus olor | Common | |
| Swan, Trumpeter | Cygnus buccinator | Ungraded | |
| Swan, Tundra | Cygnus columbianus | Ungraded | |
| Swan, Whistling | Cygnus columbianus columbianus | Rare | |
| Swan, Whooper | Cygnus cygnus | Local | |
| Swans | Cygnus | Ungraded | |
| Swift sp. | Apodidae | Rare | |
| Swift, Alpine | Tachymarptis melba | Scarce | |
| Swift, Antillean Palm | Tachornis phoenicobia | Ungraded | |
| Swift, Cape Verde | Apus alexandri | Ungraded | |
| Swift, Chimney | Chaetura pelagica | Mega | |
| Swift, Common | Apus apus | Common | |
| Swift, Common/Pallid | Apus apus/pallidus | Rare | |
| Swift, Grey-rumped | Chaetura cinereiventris | Ungraded | |
| Swift, House | Apus nipalensis | Ungraded | |
| Swift, Little | Apus affinis | Mega | |
| Swift, Mottled | Tachymarptis aequatorialis | Ungraded | |
| Swift, Pacific | Apus pacificus | Mega | |
| Swift, Pallid | Apus pallidus | Rare | |
| Swift, Palm | Cypsiurus parvus | Ungraded | |
| Swift, Plain | Apus unicolor | Ungraded | |
| Swift, Short-tailed | Chaetura brachyura | Ungraded | |
| Swift, White-collared | Streptoprocne zonaris | Ungraded | |
| Swift, White-rumped | Apus caffer | Mega | |
| Swiftlet, Black-nest | Aerodramus maximus | Ungraded | |
| Swiftlet, Germain's | Aerodramus germani | Ungraded | |
| Swiftlet, Mascarene | Aerodramus francicus | Ungraded | |
| Sylph, Long-tailed | Aglaiocercus kingii | Ungraded | |
| Sylph, Violet-tailed | Aglaiocercus coelestis | Ungraded | |
| Tachuri, Bearded | Polystictus pectoralis | Ungraded | |
| Tailorbird, Ashy | Orthotomus ruficeps | Ungraded | |
| Tailorbird, Common | Orthotomus sutorius | Ungraded | |
| Takahe | Porphyrio mantelli | Ungraded | |
| Tanager, Azure-shouldered | Thraupis cyanoptera | Ungraded | |
| Tanager, Bay-headed | Tangara gyrola | Ungraded | |
| Tanager, Beryl-spangled | Tangara nigroviridis | Ungraded | |
| Tanager, Black-backed | Tangara peruviana | Ungraded | |
| Tanager, Black-capped | Tangara heinei | Ungraded | |
| Tanager, Black-chested Mountain | Buthraupis eximia | Ungraded | |
| Tanager, Black-chinned Mountain | Anisognathus notabilis | Ungraded | |
| Tanager, Black-faced | Schistochlamys melanopis | Ungraded | |
| Tanager, Black-goggled | Trichothraupis melanops | Ungraded | |
| Tanager, Black-headed | Tangara cyanoptera | Ungraded | |
| Tanager, Blue And Black | Tangara vassorii | Ungraded | |
| Tanager, Blue-and-yellow | Thraupis bonariensis | Ungraded | |
| Tanager, Blue-backed | Cyanicterus cyanicterus | Ungraded | |
| Tanager, Blue-capped | Thraupis cyanocephala | Ungraded | |
| Tanager, Blue-grey | Thraupis episcopus | Ungraded | |
| Tanager, Blue-necked | Tangara cyanicollis | Ungraded | |
| Tanager, Blue-winged Mouintain- | Anisognathus somptuosus | Ungraded | |
| Tanager, Brassy-breasted | Tangara desmaresti | Ungraded | |
| Tanager, Brazilian | Ramphocelus bresilius | Ungraded | |
| Tanager, Burnished-buff | Tangara cayana | Ungraded | |
| Tanager, Cherrie's | Ramphocelus costaricensis | Ungraded | |
| Tanager, Chestnut-bellied Mountain | Delothraupis castaneoventris | Ungraded | |
| Tanager, Chestnut-headed | Pyrrhocoma ruficeps | Ungraded | |
| Tanager, Cinnamon | Schistochlamys ruficapillus | Ungraded | |
| Tanager, Common Bush | Chlorospingus flavopectus | Ungraded | |
| Tanager, Crimson-backed | Ramphocelus dimidiatus | Ungraded | |
| Tanager, Crimson-collared | Phlogothraupis sanguinolenta | Ungraded | |
| Tanager, Diademed | Stephanophorus diadematus | Ungraded | |
| Tanager, Dusky Bush | Chlorospingus semifuscus | Ungraded | |
| Tanager, Dusky-faced | Mitrospingus cassinii | Ungraded | |
| Tanager, Fawn-breasted | Pipraeidea melanonota | Ungraded | |
| Tanager, Flame-colored | Piranga bidentata | Ungraded | |
| Tanager, Flame-faced | Tangara parzudakii | Ungraded | |
| Tanager, Flame-rumped | Ramphocelus flammigerus | Ungraded | |
| Tanager, Glaucous | Thraupis glaucocolpa | Ungraded | |
| Tanager, Glistening-green | Chlorochrysa phoenicotis | Ungraded | |
| Tanager, Golden | Tangara arthus | Ungraded | |
| Tanager, Golden-backed Mountain- | Buthraupis aureodorsalis | Ungraded | |
| Tanager, Golden-chevroned | Thraupis ornata | Ungraded | |
| Tanager, Golden-collared | Iridosornis jelskii | Ungraded | |
| Tanager, Golden-crowned | Iridosornis rufivertex | Ungraded | |
| Tanager, Golden-eared | Tangara chrysotis | Ungraded | |
| Tanager, Golden-hooded | Tangara larvata | Ungraded | |
| Tanager, Golden-naped | Tangara ruficervix | Ungraded | |
| Tanager, Gold-ringed | Bangsia aureocincta | Ungraded | |
| Tanager, Grass-green | Chlorornis riefferii | Ungraded | |
| Tanager, Green-headed | Tangara seledon | Ungraded | |
| Tanager, Grey-hooded Bush | Cnemoscopus rubrirostris | Ungraded | |
| Tanager, Guira | Hemithraupis guira | Ungraded | |
| Tanager, Hepatic | Piranga flava | Ungraded | |
| Tanager, Hooded | Nemosia pileata | Ungraded | |
| Tanager, Hooded Mountain | Buthraupis montana | Ungraded | |
| Tanager, Huallaga | Ramphocelus melanogaster | Ungraded | |
| Tanager, Lacrimose Mountain | Anisognathus lacrymosus | Ungraded | |
| Tanager, Lemon-rumped | Ramphocelus icteronotus | Ungraded | |
| Tanager, Lesser Antillean | Tangara cucullata | Ungraded | |
| Tanager, Magpie | Cissopis leverianus | Ungraded | |
| Tanager, Masked | Tangara nigrocincta | Ungraded | |
| Tanager, Moss-backed | Bangsia edwardsi | Ungraded | |
| Tanager, Olive-green | Orthogonys chloricterus | Ungraded | |
| Tanager, Palm | Thraupis palmarum | Ungraded | |
| Tanager, Paradise | Tangara chilensis | Ungraded | |
| Tanager, Passerini's | Ramphocelus passerinii | Ungraded | |
| Tanager, Plain-colored | Tangara inornata | Ungraded | |
| Tanager, Puerto Rican | Nesospingus speculiferus | Ungraded | |
| Tanager, Purplish-mantled | Iridosornis porphyrocephalus | Ungraded | |
| Tanager, Red-necked | Tangara cyanocephala | Ungraded | |
| Tanager, Ruby-crowned | Tachyphonus coronatus | Ungraded | |
| Tanager, Rufous-throated | Tangara rufigula | Ungraded | |
| Tanager, Saffron-crowned | Tangara xanthocephala | Ungraded | |
| Tanager, Sayaca | Thraupis sayaca | Ungraded | |
| Tanager, Scarlet | Piranga olivacea | Mega | |
| Tanager, Scarlet-bellied Mountain | Anisognathus igniventris | Ungraded | |
| Tanager, Scarlet-throated | Compsothraupis loricata | Ungraded | |
| Tanager, Scrub | Tangara vitriolina | Ungraded | |
| Tanager, Seven-colored | Tangara fastuosa | Ungraded | |
| Tanager, Silver-beaked | Ramphocelus carbo | Ungraded | |
| Tanager, Silver-throated | Tangara icterocephala | Ungraded | |
| Tanager, Sooty-capped Bush- | Chlorospingus pileatus | Ungraded | |
| Tanager, Spangle-cheeked | Tangara dowii | Ungraded | |
| Tanager, Speckled | Tangara guttata | Ungraded | |
| Tanager, Spotted | Tangara punctata | Ungraded | |
| Tanager, Stripe-headed | Spindalis zena | Ungraded | |
| Tanager, Summer | Piranga rubra | Mega | |
| Tanager, Swallow- | Tersina viridis | Ungraded | |
| Tanager, Tawny-crested | Tachyphonus delatrii | Ungraded | |
| Tanager, Turquoise | Tangara mexicana | Ungraded | |
| Tanager, Western | Piranga ludoviciana | Ungraded | |
| Tanager, White-capped | Sericossypha albocristata | Ungraded | |
| Tanager, White-lined | Tachyphonus rufus | Ungraded | |
| Tanager, White-shouldered | Tachyphonus luctuosus | Ungraded | |
| Tanager, Yellow-throated | Iridosornis analis | Ungraded | |
| Tapaculo, Magellanic | Scytalopus magellanicus | Ungraded | |
| Tapaculo, Rusty-belted | Liosceles thoracicus | Ungraded | |
| Tattler, Grey-tailed | Tringa brevipes | Mega | |
| Tattler, Wandering | Tringa incana | Ungraded | |
| Tchagra, Black-crowned | Tchagra senegalus | Ungraded | |
| Tchagra, Brown-crowned | Tchagra australis | Ungraded | |
| Tchagra, Marsh | Bocagia minuta | Ungraded | |
| Teal | Anas crecca | Common | |
| Teal, Andean | Anas andium | Ungraded | |
| Teal, Baikal | Anas formosa | Mega | |
| Teal, Bernier's | Anas bernieri | Ungraded | |
| Teal, Blue-winged | Anas discors | Rare | |
| Teal, Brazilian | Amazonetta brasiliensis | Ungraded | |
| Teal, Brown | Anas aucklandica | Ungraded | |
| Teal, Cape | Anas capensis | Ungraded | |
| Teal, Chestnut | Anas castanea | Ungraded | |
| Teal, Cinnamon | Anas cyanoptera | Ungraded | |
| Teal, Green-winged | Anas carolinensis | Scarce | |
| Teal, Green-winged x Eurasian | Anas carolinensis x crecca | Scarce | |
| Teal, Grey | Anas gracilis | Ungraded | |
| Teal, Hottentot | Anas hottentota | Ungraded | |
| Teal, Puna | Anas puna | Ungraded | |
| Teal, Red-billed | Anas erythrorhyncha | Ungraded | |
| Teal, Ringed | Callonetta leucophrys | Common | |
| Teal, Silver | Anas versicolor | Ungraded | |
| Teal, Speckled | Anas flavirostris | Ungraded | |
| Tern sp. | Sterna | Local | |
| tern sp., orange-billed | Thalasseus bengalensis/elegans/maximus | Rare | |
| Tern, Aleutian | Onychoprion aleuticus | Mega | |
| Tern, American Black | Chlidonias niger surinamensis | Mega | |
| Tern, Antarctic | Sterna vittata | Ungraded | |
| Tern, Arctic | Sterna paradisaea | Local | |
| Tern, Black | Chlidonias niger | Local | |
| Tern, Black-bellied | Sterna acuticauda | Ungraded | |
| Tern, Black-fronted | Chlidonias albostriatus | Ungraded | |
| Tern, Black-naped | Sterna sumatrana | Ungraded | |
| Tern, Bridled | Onychoprion anaethetus | Mega | |
| Tern, Cabot's | Thalasseus acuflavidus | Mega | |
| Tern, Caspian | Hydroprogne caspia | Rare | |
| Tern, Cayenne | Thalasseus acuflavidus eurygnatha | Rare | |
| Tern, Common | Sterna hirundo | Common | |
| Tern, Damara | Sterna balaenarum | Ungraded | |
| Tern, Eastern Common | Sterna hirundo longipennis | Rare | |
| Tern, Elegant | Sterna elegans | Mega | |
| Tern, Fairy | Sterna nereis | Ungraded | |
| Tern, Forster's | Sterna forsteri | Rare | |
| Tern, Greater Crested | Sterna bergii | Ungraded | |
| Tern, Gull-billed | Gelochelidon nilotica | Rare | |
| Tern, Inca | Larosterna inca | Ungraded | |
| Tern, Large-billed | Phaetusa simplex | Ungraded | |
| Tern, Least | Sternula antillarum | Mega | |
| Tern, Lesser Crested | Sterna bengalensis | Mega | |
| Tern, Lesser Crested/Royal | Thalasseus bengalensis/maxima | Mega | |
| Tern, Little | Sternula albifrons | Local | |
| Tern, River | Sterna aurantia | Ungraded | |
| Tern, Roseate | Sterna dougallii | Local | |
| Tern, Royal | Thalasseus maximus | Mega | |
| Tern, Sandwich | Sterna sandvicensis | Local | |
| Tern, Saunders's | Sternula saundersi | Ungraded | |
| Tern, Sooty | Onychoprion fuscatus | Mega | |
| Tern, South American | Sterna hirundinacea | Ungraded | |
| Tern, Whiskered | Chlidonias hybrida | Rare | |
| Tern, White | Gygis alba | Ungraded | |
| Tern, White-cheeked | Sterna repressa | Ungraded | |
| Tern, White-fronted | Sterna striata | Ungraded | |
| Tern, White-winged Black | Chlidonias leucopterus | Scarce | |
| Tern, Yellow-billed | Sternula superciliaris | Ungraded | |
| Tesia, Chestnut-headed | Cettia castaneocoronata | Ungraded | |
| Thick-knee, Double-striped | Burhinus bistriatus | Ungraded | |
| Thick-knee, Great | Esacus recurvirostris | Ungraded | |
| Thick-knee, Peruvian | Burhinus superciliaris | Ungraded | |
| Thick-knee, Senegal | Burhinus senegalensis | Ungraded | |
| Thick-knee, Spotted | Burhinus capensis | Ungraded | |
| Thick-knee, Water | Burhinus vermiculatus | Ungraded | |
| Thistletail, White-chinned | Asthenes fuliginosa | Ungraded | |
| Thornbill, Black-backed | Ramphomicron dorsale | Ungraded | |
| Thornbill, Blue-mantled | Chalcostigma stanleyi | Ungraded | |
| Thornbill, Brown | Acanthiza pusilla | Ungraded | |
| Thornbill, Chestnut-rumped | Acanthiza uropygialis | Ungraded | |
| Thornbill, Inland | Acanthiza apicalis | Ungraded | |
| Thornbill, Purple-backed | Ramphomicron microrhynchum | Ungraded | |
| Thornbill, Rainbow-bearded | Chalcostigma herrani | Ungraded | |
| Thornbill, Tasmanian | Acanthiza ewingii | Ungraded | |
| Thornbill, Western | Acanthiza inornata | Ungraded | |
| Thornbill, Yellow | Acanthiza nana | Ungraded | |
| Thornbill, Yellow-rumped | Acanthiza chrysorrhoa | Ungraded | |
| Thornbird, Greater | Phacellodomus ruber | Ungraded | |
| Thornbird, Little | Phacellodomus sibilatrix | Ungraded | |
| Thornbird, Red-eyed | Phacellodomus erythrophthalmus | Ungraded | |
| Thornbird, Rufous-fronted | Phacellodomus rufifrons | Ungraded | |
| Thorntail, Green | Popelairia conversii | Ungraded | |
| Thorntail, Wire-crested | Discosura popelairii | Ungraded | |
| Thrasher, Brown | Toxostoma rufum | Mega | |
| Thrasher, California | Toxostoma redivivum | Ungraded | |
| Thrasher, Curve-billed | Toxostoma curvirostre | Ungraded | |
| Thrasher, Le Conte's | Toxostoma lecontei | Ungraded | |
| Thrasher, Long-billed | Toxostoma longirostre | Ungraded | |
| Thrasher, Pearly-eyed | Margarops fuscatus | Ungraded | |
| Thrasher, Scaly-breasted | Margarops fuscus | Ungraded | |
| Thrasher, White-breasted | Ramphocinclus brachyurus | Ungraded | |
| Thrush, Abyssinian | Turdus abyssinicus | Ungraded | |
| Thrush, Abyssinian Ground | Geokichla piaggiae | Ungraded | |
| Thrush, African | Turdus pelios | Ungraded | |
| Thrush, American Mountain | Turdus plebejus | Ungraded | |
| Thrush, Austral | Turdus falcklandii | Ungraded | |
| Thrush, Bare-eyed | Turdus tephronotus | Ungraded | |
| Thrush, Bassian | Zoothera lunulata | Ungraded | |
| Thrush, Benson's Rock | Monticola sharpei bensoni | Ungraded | |
| Thrush, Bicknell's | Catharus bicknelli | Ungraded | |
| Thrush, Black-billed | Turdus ignobilis | Ungraded | |
| Thrush, Black-billed Nightingale- | Catharus gracilirostris | Ungraded | |
| Thrush, Black-hooded | Turdus olivater | Ungraded | |
| Thrush, Black-throated | Turdus atrogularis | Rare | |
| Thrush, Blue Rock | Monticola solitarius | Mega | |
| Thrush, Blue Whistling- | Myophonus caeruleus | Ungraded | |
| Thrush, Blue-capped Rock | Monticola cinclorhynchus | Ungraded | |
| Thrush, Brown-headed | Turdus chrysolaus | Ungraded | |
| Thrush, Cape (Olive) | Turdus olivaceus | Ungraded | |
| Thrush, Cape Rock | Monticola rupestris | Ungraded | |
| Thrush, Chestnut | Turdus rubrocanus | Ungraded | |
| Thrush, Chestnut-bellied Rock- | Monticola rufiventris | Ungraded | |
| Thrush, Chiguanco | Turdus chiguanco | Ungraded | |
| Thrush, Chinese Song | Turdus mupinensis | Ungraded | |
| Thrush, Cocoa | Turdus fumigatus | Ungraded | |
| Thrush, Collared Palm- | Cichladusa arquata | Ungraded | |
| Thrush, Creamy-bellied | Turdus amaurochalinus | Ungraded | |
| Thrush, Dark-throated | Turdus ruficollis/atrogularis | Rare | |
| Thrush, Dusky | Turdus naumanni eunomus | Mega | |
| Thrush, Dusky/Naumann's | Turdus naumanni | Mega | |
| Thrush, Ecuadorian | Turdus maculirostris | Ungraded | |
| Thrush, Eyebrowed | Turdus obscurus | Mega | |
| Thrush, Fraser's Rufous | Stizorhina fraseri | Ungraded | |
| Thrush, Great | Turdus fuscater | Ungraded | |
| Thrush, Grey-backed | Turdus hortulorum | Ungraded | |
| Thrush, Grey-cheeked | Catharus minimus | Rare | |
| Thrush, Grey-cheeked/Swainson's | Catharus minimus/ustulatus | Ungraded | |
| Thrush, Grey-sided | Turdus feae | Ungraded | |
| Thrush, Groundscraper | Psophocichla litsitsirupa | Ungraded | |
| Thrush, Gulf Of Guinea | Turdus olivaceofuscus | Ungraded | |
| Thrush, Hermit | Catharus guttatus | Mega | |
| Thrush, Island | Turdus poliocephalus | Ungraded | |
| Thrush, Japanese | Turdus cardis | Ungraded | |
| Thrush, Karoo | Turdus smithi | Ungraded | |
| Thrush, Kurrichane | Turdus libonyana | Ungraded | |
| Thrush, Little Rock | Monticola rufocinereus | Ungraded | |
| Thrush, Littoral Rock | Monticola imerina | Ungraded | |
| Thrush, Long-billed | Zoothera monticola | Ungraded | |
| Thrush, Malabar Whistling- | Myophonus horsfieldii | Ungraded | |
| Thrush, Mistle | Turdus viscivorus | Common | |
| Thrush, Naumann's | Turdus naumanni naumanni | Mega | |
| Thrush, Orange-headed | Zoothera citrina citriana | Ungraded | |
| Thrush, Pale | Turdus pallidus | Ungraded | |
| Thrush, Pale-breasted | Turdus leucomelas | Ungraded | |
| Thrush, Pied | Geokichla wardii | Ungraded | |
| Thrush, Red-legged | Turdus plumbeus | Ungraded | |
| Thrush, Red-throated | Turdus ruficollis | Mega | |
| Thrush, Rufous-bellied | Turdus rufiventris | Ungraded | |
| Thrush, Rufous-tailed Rock | Monticola saxatilis | Mega | |
| Thrush, Scaly | Zoothera dauma | Ungraded | |
| Thrush, Sentinel Rock- | Monticola explorator | Ungraded | |
| Thrush, Short-toed Rock | Monticola brevipes | Ungraded | |
| Thrush, Siberian | Geokichla sibirica | Mega | |
| Thrush, Song | Turdus philomelos | Common | |
| Thrush, Spectacled | Turdus nudigenis | Ungraded | |
| Thrush, Spotted Ground- | Geokichla guttata | Ungraded | |
| Thrush, Spotted Morning- | Cichladusa guttata | Ungraded | |
| Thrush, Spot-winged | Geokichla spiloptera | Ungraded | |
| Thrush, Sri Lanka | Zoothera imbricata | Ungraded | |
| Thrush, Sri Lanka Whistling- | Myophonus blighi | Ungraded | |
| Thrush, Sulawesi | Cataponera turdoides | Ungraded | |
| Thrush, Swainson's | Catharus ustulatus | Mega | |
| Thrush, Tickell's | Turdus unicolor | Ungraded | |
| Thrush, Varied | Ixoreus naevius | Mega | |
| Thrush, White-necked | Turdus albicollis | Ungraded | |
| Thrush, White's | Zoothera dauma | Mega | |
| Thrush, White-throated Rock | Monticola gularis | Ungraded | |
| Thrush, Wood | Hylocichla mustelina | Mega | |
| Thrush, Yellow-legged | Platycichla flavipes | Ungraded | |
| Thrush, Yemen | Turdus menachensis | Ungraded | |
| Thrush-Tanager, Rosy | Rhodinocichla rosea | Ungraded | |
| Tinamou, Cinereous | Crypturellus cinereus | Ungraded | |
| Tinamou, Elegant Crested- | Eudromia elegans | Ungraded | |
| Tinamou, Great | Tinamus major | Ungraded | |
| Tinamou, Pale-browed | Crypturellus transfasciatus | Ungraded | |
| Tinamou, Patagonian | Tinamotis ingoufi | Ungraded | |
| Tinamou, Red-winged | Rhyncotus rufescens | Ungraded | |
| Tinamou, Undulated | Crypturellus undulatus | Ungraded | |
| Tinkerbird, Red-fronted | Pogoniulus pusillus | Ungraded | |
| Tinkerbird, Red-rumped | Pogoniulus atroflavus | Ungraded | |
| Tinkerbird, Speckled | Pogoniulus scolopaceus | Ungraded | |
| Tinkerbird, Yellow-fronted | Pogoniulus chrysoconus | Ungraded | |
| Tinkerbird, Yellow-rumped | Pogoniulus bilineatus | Ungraded | |
| Tinkerbird, Yellow-throated | Pogoniulus subsulphureus | Ungraded | |
| Tit sp. | Paridae | Ungraded | |
| Tit, African Blue | Cyanistes teneriffae | Ungraded | |
| Tit, Ashy | Parus cinerascens | Ungraded | |
| Tit, Azure | Cyanistes cyanus | Mega | |
| Tit, Bearded | Panurus biarmicus | Local | |
| Tit, Black-browed | Aegithalos iouschistos | Ungraded | |
| Tit, Black-lored | Parus xanthogenys | Ungraded | |
| Tit, Black-throated | Aegithalos concinnus | Ungraded | |
| Tit, Blue | Cyanistes caeruleus | Common | |
| Tit, Carp's | Parus carpi | Ungraded | |
| Tit, Cinereous | Parus cinereus | Ungraded | |
| Tit, Coal | Periparus ater | Common | |
| Tit, Crested | Lophophanes cristatus | Local | |
| Tit, Forest Penduline | Anthoscopus flavifrons | Ungraded | |
| Tit, Great | Parus major | Common | |
| Tit, Green-backed | Parus monticolus | Ungraded | |
| Tit, Grey | Parus afer | Ungraded | |
| Tit, Grey-crested | Parus dichrous | Ungraded | |
| Tit, Long-tailed | Aegithalos caudatus | Common | |
| Tit, Marsh | Poecile palustris | Common | |
| Tit, Marsh/Willow | Poecile palustris/montanus | Local | |
| Tit, Northern Long-tailed | Aegithalos caudatus caudatus | Rare | |
| Tit, Northern Willow | Poecile montanus borealis | Mega | |
| Tit, Palawan | Periparus amabilis | Ungraded | |
| Tit, Penduline | Remiz pendulinus | Rare | |
| Tit, Red-throated | Parus fringillinus | Ungraded | |
| Tit, Rufous-vented | Parus rubidiventris | Ungraded | |
| Tit, Scottish Crested | Lophophanes cristatus scoticus | Local | |
| Tit, Sennar Penduline | Anthoscopus punctifrons | Ungraded | |
| Tit, Siberian | Poecile cinctus | Mega | |
| Tit, Sombre | Poecile lugubris | Ungraded | |
| Tit, Southern Black | Parus niger | Ungraded | |
| Tit, Sultan | Melanochlora sultanea | Ungraded | |
| Tit, Turkestan | Parus major bokharensis | Ungraded | |
| Tit, Varied | Parus varius | Ungraded | |
| Tit, White-Crowned Penduline | Remiz coronatus | Ungraded | |
| Tit, White-naped | Parus nuchalis | Ungraded | |
| Tit, White-shouldered Black | Parus guineensis | Ungraded | |
| Tit, Willow | Poecile montanus | Local | |
| Tit, Yellow | Parus holsti | Ungraded | |
| Tit, Yellow Penduline | Anthoscopus parvulus | Ungraded | |
| Tit, Yellow-bellied | Periparus venustulus | Ungraded | |
| Tit, Yellow-breasted | Cyanistes cyanus flavipectus | Ungraded | |
| Tit, Yellow-cheeked | Parus spilonotus | Ungraded | |
| Tit-Babbler, Pin-striped | Macronus gularis | Ungraded | |
| Titmouse, Black-crested | Baeolophus atricristatus | Ungraded | |
| Titmouse, Bridled | Parus wollweberi | Ungraded | |
| Titmouse, Juniper | Baeolophus ridgwayi | Ungraded | |
| Titmouse, Oak | Baeolophus inornatus | Ungraded | |
| Titmouse, Tufted | Parus bicolor | Ungraded | |
| Tit-Spinetail, Andean | Leptasthenura andicola | Ungraded | |
| Tit-Spinetail, Plain-mantled | Leptasthenura aegithaloides | Ungraded | |
| Tit-tyrant, Tufted | Anairetes parulus | Ungraded | |
| Tityra, Black-crowned | Tityra inquisitor | Ungraded | |
| Tityra, Black-tailed | Tityra cayana | Ungraded | |
| Tityra, Masked | Tityra semifasciata | Ungraded | |
| Tody, Broad-billed | Todus subulatus | Ungraded | |
| Tody, Cuban | Todus multicolor | Ungraded | |
| Tody, Jamaican | Todus todus | Ungraded | |
| Tody, Puerto Rican | Todus mexicanus | Ungraded | |
| Tody-Flycatcher, Black-backed | Poecilotriccus pulchellus | Ungraded | |
| Tody-Flycatcher, Lulu's | Poecilotriccus luluae | Ungraded | |
| Tody-Flycatcher, Rufous-crowned | Poecilotriccus ruficeps | Ungraded | |
| Tody-Flycatcher, Rusty-fronted | Poecilotriccus latirostris | Ungraded | |
| Tody-Flycatcher, Spotted | Todirostrum maculatum | Ungraded | |
| Tody-Flycatcher, Yellow-lored | Todirostrum poliocephalum | Ungraded | |
| Tody-tyrant, Pearly-vented | Hemitriccus margaritaceiventer | Ungraded | |
| Tomtit | Petroica macrocephala | Ungraded | |
| Topaz, Crimson | Topaza pella | Ungraded | |
| Toucan, Black-mandibled | Ramphastos ambiguus | Ungraded | |
| Toucan, Channel-billed | Ramphastos vitellinus | Ungraded | |
| Toucan, Chestnut-mandibled | Ramphastos ambiguus swainsonii | Ungraded | |
| Toucan, Choco | Ramphastos brevis | Ungraded | |
| Toucan, Green-billed | Ramphastos dicolorus | Ungraded | |
| Toucan, Hooded Mountain | Andigena cucullata | Ungraded | |
| Toucan, Keel-billed | Ramphastos sulfuratus | Ungraded | |
| Toucan, Plate-billed Mountain- | Andigena laminirostris | Ungraded | |
| Toucan, Toco | Ramphastos toco | Ungraded | |
| Toucan, White-throated | Ramphastos tucanus | Ungraded | |
| Toucanet, Blue-banded | Aulacorhynchus coeruleicinctis | Ungraded | |
| Toucanet, Crimson-rumped | Aulacorhynchus haematopygus | Ungraded | |
| Toucanet, Emerald | Aulacorhynchus prasinus | Ungraded | |
| Toucanet, Golden-collared | Selenidera reinwardtii | Ungraded | |
| Toucanet, Grey-throated | Aulacorhynchus griseigularis | Ungraded | |
| Toucanet, Groove-billed | Aulacorhynchus sulcatus | Ungraded | |
| Toucanet, Guianan | Selenidera piperivora | Ungraded | |
| Toucanet, Saffron | Pteroglossus bailloni | Ungraded | |
| Toucanet, Spot-billed | Selenidera maculirostris | Ungraded | |
| Toucanet, Yellow-billed | Aulacorhynchus sulcatus calorhynchus | Ungraded | |
| Toucanette, Yellow-eared | Selenidera spectabilis | Ungraded | |
| Towhee, Abert's | Melozone aberti | Ungraded | |
| Towhee, California | Melozone crissalis | Ungraded | |
| Towhee, Canyon | Melozone fusca | Ungraded | |
| Towhee, Eastern | Pipilo erythrophthalmus | Mega | |
| Towhee, Green-tailed | Pipilo chlorurus | Ungraded | |
| Towhee, Spotted | Pipilo maculatus | Ungraded | |
| Tragopan, Cabot's | Tragopan caboti | Ungraded | |
| Tragopan, Satyr | Tragopan satyra | Ungraded | |
| Tragopan, Temminck's | Tragopan temminckii | Ungraded | |
| Tragopan, Western | Tragopan melanocephalus | Ungraded | |
| Trainbearer, Black-tailed | Lesbia victoriae | Ungraded | |
| Trainbearer, Green-tailed | Lesbia nuna | Ungraded | |
| Treecreeper, Bar-tailed | Certhia himalayana | Ungraded | |
| Treecreeper, Brown | Climacteris picumnus | Ungraded | |
| Treecreeper, Common | Certhia familiaris | Common | |
| Treecreeper, Northern | Certhia familiaris familiaris | Scarce | |
| Treecreeper, Rufous | Climacteris rufa | Ungraded | |
| Treecreeper, Short-toed | Certhia brachydactyla | Mega | |
| Treecreeper, White-throated | Cormobates leucophaeus | Ungraded | |
| Treehunter, Streak-capped | Thripadectes virgaticeps | Ungraded | |
| Treehunter, Uniform | Thripadectes ignobilis | Ungraded | |
| Treepie, Bornean | Dendrocitta cinerascens | Ungraded | |
| Treepie, Collared | Dendrocitta frontalis | Ungraded | |
| Treepie, Grey | Dendrocitta formosae | Ungraded | |
| Treepie, Hooded | Crypsirina cucullata | Ungraded | |
| Treepie, Racket-tailed | Crypsirina temia | Ungraded | |
| Treepie, Rufous | Dendrocitta vagabunda | Ungraded | |
| Treeswift, Crested | Hemiprocne coronata | Ungraded | |
| Treeswift, Grey-rumped | Hemiprocne longipennis | Ungraded | |
| Treeswift, Moustached | Hemiprocne mystacea | Ungraded | |
| Treeswift, Whiskered | Hemiprocne comata | Ungraded | |
| Trembler, Brown | Cinclocerthia ruficauda | Ungraded | |
| Trembler, Grey | Cinclocerthia gutturalis | Ungraded | |
| Triller, Pied | Lalage nigra | Ungraded | |
| Triller, Polynesian | Lalage maculosa | Ungraded | |
| Triller, White-winged | Lalage tricolor | Ungraded | |
| Trogon, Amazonian | Trogon ramonianus | Ungraded | |
| Trogon, Baird's | Trogon bairdii | Ungraded | |
| Trogon, Bare-cheeked | Apaloderma aequatoriale | Ungraded | |
| Trogon, Bar-tailed | Apaloderma vittatum | Ungraded | |
| Trogon, Black-headed | Trogon melanocephalus | Ungraded | |
| Trogon, Black-tailed | Trogon melanurus | Ungraded | |
| Trogon, Black-throated | Trogon rufus | Ungraded | |
| Trogon, Blue-crowned | Trogon curucui | Ungraded | |
| Trogon, Choco | Trogon comptus | Ungraded | |
| Trogon, Citreoline | Trogon citreolus | Ungraded | |
| Trogon, Collared | Trogon collaris | Ungraded | |
| Trogon, Cuban | Priotelus temnurus | Ungraded | |
| Trogon, Ecuadorian | Trogon melanurus mesurus | Ungraded | |
| Trogon, Elegant | Trogon elegans | Ungraded | |
| Trogon, Gartered | Trogon caligatus | Ungraded | |
| Trogon, Green-backed | Trogon viridis | Ungraded | |
| Trogon, Malabar | Harpactes fasciatus | Ungraded | |
| Trogon, Masked | Trogon personatus | Ungraded | |
| Trogon, Narina | Apaloderma narina | Ungraded | |
| Trogon, Orange-bellied | Trogon collaris aurantiiventris | Ungraded | |
| Trogon, Orange-breasted | Harpactes oreskios | Ungraded | |
| Trogon, Red-headed | Harpactes erythrocephalus | Ungraded | |
| Trogon, Scarlet-rumped | Harpactes duvaucelii | Ungraded | |
| Trogon, Slaty-tailed | Trogon massena | Ungraded | |
| Trogon, Surucua | Trogon surrucura | Ungraded | |
| Trogon, Violaceous | Trogon violaceus | Ungraded | |
| Trogon, Ward's | Harpactes wardi | Ungraded | |
| Trogon, Whitehead's | Harpactes whiteheadi | Ungraded | |
| Trogon, White-tailed | Trogan viridis chionurus | Ungraded | |
| Tropicbird sp. | Phaethon | Ungraded | |
| Tropicbird, Red-billed | Phaethon aethereus | Mega | |
| Tropicbird, Red-tailed | Phaethon rubricauda | Ungraded | |
| Tropicbird, White-tailed | Phaethon lepturus | Ungraded | |
| Troupial | Icterus icterus | Ungraded | |
| Troupial, Campo | Icterus jamacaii | Ungraded | |
| Trumpeter, Grey-winged | Psophia crepitans | Ungraded | |
| Tuftedcheek, Streaked | Pseudocolaptes boissonneautii | Ungraded | |
| Tui | Prosthemadera novaeseelandiae | Ungraded | |
| Turaco, Bannerman's | Tauraco bannermani | Ungraded | |
| Turaco, Black-billed | Tauraco schuetti | Ungraded | |
| Turaco, Great Blue | Corythaeola cristata | Ungraded | |
| Turaco, Guinea | Tauraco persa | Ungraded | |
| Turaco, Hartlaub's | Tauraco hartlaubi | Ungraded | |
| Turaco, Knysna | Tauraco corythaix | Ungraded | |
| Turaco, Livingstone's | Tauraco livingstonii | Ungraded | |
| Turaco, Purple-crested | Tauraco porphyreolophus | Ungraded | |
| Turaco, Ross's | Musophaga rossae | Ungraded | |
| Turaco, Ruspoli's | Tauraco ruspolii | Ungraded | |
| Turaco, Schalow's | Tauraco schalowi | Ungraded | |
| Turaco, Violet | Musophaga violacea | Ungraded | |
| Turaco, White-cheeked | Tauraco leucotis | Ungraded | |
| Turaco, Yellow-billed | Tauraco macrorhynchus | Ungraded | |
| Turca, Moustached | Pteroptochos megapodius | Ungraded | |
| Turkey | Meleagris gallopavo | Ungraded | |
| Turkey, Australian Brush- | Alectura lathami | Ungraded | |
| Turkey, Ocellated | Meleagris ocellata | Ungraded | |
| Turnstone | Arenaria interpres | Common | |
| Turnstone, Black | Arenaria melanocephala | Ungraded | |
| Twistwing, Brownish | Cnipodectes subbrunneus | Ungraded | |
| Twite | Carduelis flavirostris | Local | |
| Tyrannulet, Black-capped | Phyllomyias nigrocapillus | Ungraded | |
| Tyrannulet, Brown-capped | Ornithion brunneicapillus | Ungraded | |
| Tyrannulet, Choco | Zimmerius albigularis | Ungraded | |
| Tyrannulet, Mouse-colored | Phaeomyias murina | Ungraded | |
| Tyrannulet, Northern Beardless | Camptostoma imberbe | Ungraded | |
| Tyrannulet, Paltry | Zimmerius vilissimus | Ungraded | |
| Tyrannulet, Planalto | Phyllomyias fasciatus | Ungraded | |
| Tyrannulet, Serra Do Mar | Phylloscartes difficilis | Ungraded | |
| Tyrannulet, Slender-billed | Inezia tenuirostris | Ungraded | |
| Tyrannulet, Sooty | Serpophaga nigricans | Ungraded | |
| Tyrannulet, Southern Beardless | Camptostoma obsoletum | Ungraded | |
| Tyrannulet, Torrent | Serpophaga cinerea | Ungraded | |
| Tyrannulet, Venezuelan | Zimmerius improbus | Ungraded | |
| Tyrannulet, White-crested | Serpophaga subcristata | Ungraded | |
| Tyrannulet, White-throated | Mecocerculus leucophrys | Ungraded | |
| Tyrannulet, Yellow | Capsiempis flaveola | Ungraded | |
| Tyrannulet, Yellow-crowned | Tyrannulus elatus | Ungraded | |
| Tyrant, Black-billed Shrike- | Agriornis montana | Ungraded | |
| Tyrant, Black-capped Pygmy | Myiornis atricapillus | Ungraded | |
| Tyrant, Blue-billed Black | Knipolegus cyanirostris | Ungraded | |
| Tyrant, Cattle | Machetornis rixosus | Ungraded | |
| Tyrant, Dark-faced Ground- | Muscisaxicola maclovianus | Ungraded | |
| Tyrant, Eared Pygmy- | Myiornis auricularis | Ungraded | |
| Tyrant, Helmeted Pygmy | Lophotriccus galeatus | Ungraded | |
| Tyrant, Juan-fernandez Tit- | Anairetes fernandeziannus | Ungraded | |
| Tyrant, Kaempfer's Tody- | Hemitriccus kaempferi | Ungraded | |
| Tyrant, Long-tailed | Colonia colonus | Ungraded | |
| Tyrant, Many-coloured Rush- | Tachuris rubrigastra | Ungraded | |
| Tyrant, Masked Water- | Fluvicola nengeta | Ungraded | |
| Tyrant, Paramo Ground | Muscisaxicola alpinus | Ungraded | |
| Tyrant, Pied Water | Fluvicola pica | Ungraded | |
| Tyrant, Puna Ground- | Muscisaxicola juninensis | Ungraded | |
| Tyrant, Riverside | Knipolegus orenocensis | Ungraded | |
| Tyrant, Santa Marta Bush- | Myiotheretes pernix | Ungraded | |
| Tyrant, Scale-crested Pygmy | Lophotriccus pileatus | Ungraded | |
| Tyrant, Spectacled | Hymenops perspicillatus | Ungraded | |
| Tyrant, Strange-tailed | Alectrurus risora | Ungraded | |
| Tyrant, Streak-throated Bush | Myiotheretes striaticollis | Ungraded | |
| Tyrant, Streamer-tailed | Gubernetes yetapa | Ungraded | |
| Tyrant, Tawny-crowned Pygmy | Euscarthmus meloryphus | Ungraded | |
| Tyrant, Tumbes | Tumbezia salvini | Ungraded | |
| Tyrant, Velvety Black | Knipolegus nigerrimus | Ungraded | |
| Tyrant, White-browed Chat- | Ochthoeca leucophrys | Ungraded | |
| Tyrant, White-fronted Ground- | Muscisaxicola albifrons | Ungraded | |
| Tyrant, White-headed Marsh | Arundinicola leucocephala | Ungraded | |
| Tyrant, White-winged Black- | Knipolegus aterrimus | Ungraded | |
| Tyrant, Yellow-browed | Satrapa icterophrys | Ungraded | |
| Tyrant-Manakin, Pale-bellied | Neopelma pallescens | Ungraded | |
| Umbrellabird, Amazonian | Cephalopterus ornatus | Ungraded | |
| unidentified | Aves sp. | Common | |
| Vanga, Chabert's | Leptopterus chabert | Ungraded | |
| Vanga, Helmet | Euryceros prevostii | Ungraded | |
| Vanga, Hook-billed | Vanga curvirostris | Ungraded | |
| Vanga, Pollen's | Xenopirostris polleni | Ungraded | |
| Vanga, Red-tailed | Calicalicus madagascariensis | Ungraded | |
| Vanga, Rufous | Schetba rufa | Ungraded | |
| Vanga, Sickle-billed | Falculea palliata | Ungraded | |
| Vanga, Van Dam's | Xenopirostris damii | Ungraded | |
| Vanga, White-headed | Artamella viridis | Ungraded | |
| Veery | Catharus fuscescens | Mega | |
| Velvetbreast, Mountain | Lafresnaya lafresnayi | Ungraded | |
| Verdin | Auriparus flaviceps | Ungraded | |
| Violet-ear, Brown | Colibri delphinae | Ungraded | |
| Violetear, Green | Colibri thalassinus | Ungraded | |
| Violet-ear, Sparkling | Colibri coruscans | Ungraded | |
| Violetear, White-vented | Colibri serrirostris | Ungraded | |
| Vireo, Bell's | Vireo bellii | Ungraded | |
| Vireo, Black-capped | Vireo atricapillus | Ungraded | |
| Vireo, Black-whiskered | Vireo altiloquus | Ungraded | |
| Vireo, Blue-headed | Vireo solitarius | Ungraded | |
| Vireo, Cuban | Vireo gundlachii | Ungraded | |
| vireo, Eastern Warbling- | Vireo gilvus | Ungraded | |
| Vireo, Mangrove | Vireo pallens | Ungraded | |
| Vireo, Philadelphia | Vireo philadelphicus | Mega | |
| Vireo, Plumbeous | Vireo plumbeus | Ungraded | |
| Vireo, Red-eyed | Vireo olivaceus | Rare | |
| Vireo, San Andres | Vireo caribaeus | Ungraded | |
| Vireo, White-eyed | Vireo griseus | Mega | |
| Vireo, Yellow-green | Vireo flavoviridis | Ungraded | |
| Vireo, Yellow-throated | Vireo flavifrons | Mega | |
| Vireo, Yucatan | Vireo magister | Ungraded | |
| Visorbearer, Hyacinth | Augastes scutatus | Ungraded | |
| Vulture sp. | Aegypiinae | Rare | |
| Vulture, American Black | Coragyps atratus | Ungraded | |
| Vulture, Cape Griffon | Gyps coprotheres | Ungraded | |
| Vulture, Cinereous | Aegypius monachus | Ungraded | |
| Vulture, Egyptian | Neophron percnopterus | Ungraded | |
| Vulture, Eurasian Griffon | Gyps fulvus | Mega | |
| Vulture, Greater Yellow-headed | Cathartes melambrotus | Ungraded | |
| Vulture, Himalayan Griffon | Gyps himalayensis | Ungraded | |
| Vulture, Hooded | Necrosyrtes monachus | Ungraded | |
| Vulture, King | Sarcoramphus papa | Ungraded | |
| Vulture, Lappet-faced | Torgos tracheliotos | Ungraded | |
| Vulture, Lesser Yellow-headed | Cathartes burrovianus | Ungraded | |
| Vulture, Long-billed | Gyps indicus | Ungraded | |
| Vulture, Palm-nut | Gypohierax angolensis | Ungraded | |
| Vulture, Red-headed | Sarcogyps calvus | Ungraded | |
| Vulture, Rüppell's Griffon | Gyps rueppellii | Ungraded | |
| Vulture, Slender-billed | Gyps tenuirostris | Ungraded | |
| Vulture, Turkey | Cathartes aura | Ungraded | |
| Vulture, White-backed | Gyps africanus | Ungraded | |
| Vulture, White-headed | Trigonoceps occipitalis | Ungraded | |
| Vulture, White-rumped | Gyps bengalensis | Ungraded | |
| Wagtail sp. | Motacilla | Ungraded | |
| Wagtail, African Pied | Motacilla aguimp | Ungraded | |
| Wagtail, Amur | Motacilla alba leucopsis | Mega | |
| Wagtail, Ashy-headed | Motacilla flava cinereocapilla | Scarce | |
| Wagtail, Black-backed | Motacilla alba lugens | Ungraded | |
| Wagtail, Black-headed | Motacilla flava feldegg | Rare | |
| Wagtail, Blue-headed | Motacilla flava flava | Local | |
| Wagtail, Cape | Motacilla capensis | Ungraded | |
| Wagtail, Channel | Motacilla flava flava x flavissima | Local | |
| Wagtail, Citrine | Motacilla citreola | Rare | |
| Wagtail, Eastern Blue-headed (simillima) | Motacilla flava simillima | Mega | |
| Wagtail, Eastern Yellow | Motacilla tschutschensis | Mega | |
| Wagtail, Forest | Dendronanthus indicus | Ungraded | |
| Wagtail, Grey | Motacilla cinerea | Common | |
| Wagtail, Grey-headed | Motacilla flava thunbergi | Scarce | |
| Wagtail, Japanese | Motacilla grandis | Ungraded | |
| Wagtail, Madagascar | Motacilla flaviventris | Ungraded | |
| Wagtail, Masked | Motacilla alba personata | Ungraded | |
| Wagtail, Moroccan | Motacilla alba subpersonata | Rare | |
| Wagtail, Mountain | Motacilla clara | Ungraded | |
| Wagtail, Pied | Motacilla alba yarrellii | Common | |
| Wagtail, Spanish | Motacilla flava iberiae | Scarce | |
| Wagtail, Swinhoe's | Motacilla alba ocularis | Ungraded | |
| Wagtail, Sykes's | Motacilla flava beema | Mega | |
| Wagtail, White | Motacilla alba | Local | |
| Wagtail, White-browed | Motacilla maderaspatensis | Ungraded | |
| Wagtail, Yellow | Motacilla flava | Common | |
| Wagtail, Yellow | Motacilla flava flavissima | Ungraded | |
| Wagtail, Yellow-headed | Motacilla flava lutea | Ungraded | |
| Wallcreeper | Tichodroma muraria | Mega | |
| Warbler, Adelaide's | Dendroica adelaidae | Ungraded | |
| Warbler, African Desert | Sylvia deserti | Ungraded | |
| Warbler, Aquatic | Acrocephalus paludicola | Scarce | |
| Warbler, Arabian | Sylvia leucomelaena | Ungraded | |
| Warbler, Arctic | Phylloscopus borealis | Rare | |
| Warbler, Ashy-throated | Phylloscopus maculipennis | Ungraded | |
| Warbler, Asian Desert | Sylvia nana | Mega | |
| Warbler, Australian Reed | Acrocephalus australis | Ungraded | |
| Warbler, Balearic | Sylvia balearica | Ungraded | |
| Warbler, Banded | Sylvia boehmi | Ungraded | |
| Warbler, Barred | Sylvia nisoria | Scarce | |
| Warbler, Basra Reed | Acrocephalus griseldis | Mega | |
| Warbler, Bay-breasted | Dendroica castanea | Mega | |
| Warbler, Black-and-white | Mniotilta varia | Mega | |
| Warbler, Black-browed Reed- | Acrocephalus bistrigiceps | Ungraded | |
| Warbler, Blackburnian | Setophaga fusca | Mega | |
| Warbler, Black-faced | Abroscopus schisticeps | Ungraded | |
| Warbler, Blackpoll | Setophaga striata | Mega | |
| Warbler, Black-throated Blue | Setophaga caerulescens | Mega | |
| Warbler, Black-throated Green | Setophaga virens | Mega | |
| Warbler, Blue-winged | Vermivora cyanoptera | Mega | |
| Warbler, Blyth's Leaf | Phylloscopus reguloides | Ungraded | |
| Warbler, Blyth's Reed | Acrocephalus dumetorum | Rare | |
| Warbler, Bonelli's sp. | Phylloscopus bonelli/orientalis | Rare | |
| Warbler, Booted | Iduna caligata | Rare | |
| Warbler, Brewster's | Vermivora cyanoptera x chrysoptera | Ungraded | |
| Warbler, Broad-billed | Tickellia hodgsoni | Ungraded | |
| Warbler, Brooks's Leaf | Phylloscopus subviridis | Ungraded | |
| Warbler, Brown | Sylvia lugens | Ungraded | |
| Warbler, Brown Woodland | Phylloscopus umbrovirens | Ungraded | |
| Warbler, Buff-rumped | Myiothlypis fulvicauda | Ungraded | |
| Warbler, Canada | Cardellina canadensis | Mega | |
| Warbler, Cape May | Setophaga tigrina | Mega | |
| Warbler, Cape Verde Cane | Acrocephalus brevipennis | Ungraded | |
| Warbler, Cerulean | Dendroica cerulea | Mega | |
| Warbler, Cetti's | Cettia cetti | Scarce | |
| Warbler, Chestnut-sided | Setophaga pensylvanica | Mega | |
| Warbler, Chestnut-vented | Sylvia subcaerulea | Ungraded | |
| Warbler, Chinese Leaf | Phylloscopus yunnanensis | Ungraded | |
| Warbler, Citrine | Myiothlypis luteoviridis | Ungraded | |
| Warbler, Clamorous Reed | Acrocephalus stentoreus | Ungraded | |
| Warbler, Claudia's Leaf | Phylloscopus claudiae | Ungraded | |
| Warbler, Colima | Leiothlypis crissalis | Ungraded | |
| Warbler, Cricket | Spiloptila clamans | Ungraded | |
| Warbler, Cyprus | Sylvia melanothorax | Mega | |
| Warbler, Dartford | Sylvia undata | Local | |
| Warbler, Dusky | Phylloscopus fuscatus | Scarce | |
| Warbler, Dusky/Radde's | Phylloscopus fuscatus/schwarzi | Scarce | |
| Warbler, Eastern Bonelli's | Phylloscopus orientalis | Mega | |
| Warbler, Eastern Crowned | Phylloscopus coronatus | Mega | |
| Warbler, Eastern Grasshopper | Locustella naevia straminea | Ungraded | |
| Warbler, Eastern Olivaceous | Iduna pallida | Mega | |
| Warbler, Eastern Orphean | Sylvia crassirostris | Mega | |
| Warbler, Eastern Savi's | Locustella luscinioides fusca | Mega | |
| Warbler, Eastern Subalpine | Sylvia cantillans albistriata | Rare | |
| Warbler, Elfin-woods | Dendroica angelae | Ungraded | |
| Warbler, Flame-throated | Oreothlypis gutturalis | Ungraded | |
| Warbler, Flavescent | Myiothlypis flaveola | Ungraded | |
| Warbler, Garden | Sylvia borin | Common | |
| Warbler, Golden-cheeked | Dendroica chrysoparia | Ungraded | |
| Warbler, Golden-crowned | Basileuterus culicivorus | Ungraded | |
| Warbler, Golden-winged | Vermivora chrysoptera | Mega | |
| Warbler, Grace's | Setophaga graciae | Ungraded | |
| Warbler, Grasshopper | Locustella naevia | Local | |
| Warbler, Gray's Grasshopper | Locustella fasciolata | Mega | |
| Warbler, Great Reed | Acrocephalus arundinaceus | Rare | |
| Warbler, Green | Phylloscopus nitidus | Mega | |
| Warbler, Greenish | Phylloscopus trochiloides | Scarce | |
| Warbler, Grey-capped | Eminia lepida | Ungraded | |
| Warbler, Grey-hooded | Phylloscopus xanthoschistos | Ungraded | |
| Warbler, Hermit | Setophaga occidentalis | Ungraded | |
| Warbler, Hooded | Setophaga citrina | Mega | |
| Warbler, Hume's Leaf | Phylloscopus humei | Rare | |
| Warbler, Icterine | Hippolais icterina | Scarce | |
| Warbler, Indian Reed | Acrocephalus stentoreus brunnescens | Ungraded | |
| Warbler, Japanese Bush | Horornis diphone | Ungraded | |
| Warbler, Kamchatka Leaf | Phylloscopus examinandus | Ungraded | |
| Warbler, Kentucky | Geothlypis formosa | Ungraded | |
| Warbler, Kirtland's | Dendroica kirtlandii | Ungraded | |
| Warbler, Kopje | Euryptila subcinnamomea | Ungraded | |
| Warbler, Lanceolated | Locustella lanceolata | Rare | |
| Warbler, Lemon-rumped | Phylloscopus chloronotus | Ungraded | |
| Warbler, Lucy's | Leiothlypis luciae | Ungraded | |
| Warbler, Magnolia | Dendroica magnolia | Mega | |
| Warbler, Manchurian Bush | Horornis borealis | Ungraded | |
| Warbler, Marmora's | Sylvia sarda | Mega | |
| Warbler, Marsh | Acrocephalus palustris | Scarce | |
| Warbler, Melodious | Hippolais polyglotta | Scarce | |
| Warbler, Ménétries's | Sylvia mystacea | Mega | |
| Warbler, Middendorff's Grasshopper | Locustella ochotensis | Ungraded | |
| Warbler, Moltoni's | Sylvia moltonii | Mega | |
| Warbler, Mourning | Geothlypis philadelphia | Ungraded | |
| Warbler, Moustached | Acrocephalus melanopogon | Mega | |
| Warbler, Moustached Grass | Melocichla mentalis | Ungraded | |
| Warbler, Nashville | Leiothlypis ruficapilla | Ungraded | |
| Warbler, Olive-tree | Hippolais olivetorum | Mega | |
| Warbler, Orange-crowned | Leiothlypis celata | Ungraded | |
| Warbler, Oriental Reed | Acrocephalus orientalis | Ungraded | |
| Warbler, Oriente | Teretistris fornsi | Ungraded | |
| Warbler, Oriole | Hypergerus atriceps | Ungraded | |
| Warbler, Paddyfield | Acrocephalus agricola | Rare | |
| Warbler, Pale-legged Leaf | Phylloscopus tenellipes | Mega | |
| Warbler, Pallas's | Phylloscopus proregulus | Scarce | |
| Warbler, Pallas's Grasshopper | Locustella certhiola | Mega | |
| Warbler, Palm | Setophaga palmarum | Mega | |
| Warbler, Pine | Dendroica pinus | Ungraded | |
| Warbler, Pink-headed | Cardellina versicolor | Ungraded | |
| Warbler, Plain Leaf | Phylloscopus neglectus | Ungraded | |
| Warbler, Plumbeous | Setophaga plumbea | Ungraded | |
| Warbler, Prairie | Setophaga discolor | Mega | |
| Warbler, Prothonotary | Protonotaria citrea | Ungraded | |
| Warbler, Radde's | Phylloscopus schwarzi | Scarce | |
| Warbler, Red | Cardellina rubra | Ungraded | |
| Warbler, Red-faced | Cardellina rubrifrons | Ungraded | |
| Warbler, Red-winged | Heliolais erythroptera | Ungraded | |
| Warbler, Red-winged Grey | Drymocichla incana | Ungraded | |
| Warbler, Reed | Acrocephalus scirpaceus | Common | |
| Warbler, River | Locustella fluviatilis | Rare | |
| Warbler, Rufous-capped | Basileuterus rufifrons | Ungraded | |
| Warbler, Rufous-eared | Malcorus pectoralis | Ungraded | |
| Warbler, Rüppell's | Sylvia rueppelli | Mega | |
| Warbler, Russet-crowned | Myiothlypis coronata | Ungraded | |
| Warbler, Sakhalin Leaf- | Phylloscopus borealoides | Ungraded | |
| Warbler, Sardinian | Sylvia melanocephala | Rare | |
| Warbler, Savi's | Locustella luscinioides | Rare | |
| Warbler, Sedge | Acrocephalus schoenobaenus | Common | |
| Warbler, Speckled | Pyrrholaemus sagittatus | Ungraded | |
| Warbler, Spectacled | Sylvia conspicillata | Mega | |
| Warbler, Spotted Bush | Locustella thoracica | Ungraded | |
| Warbler, Sri Lanka Bush | Bradypterus palliseri | Ungraded | |
| Warbler, St Lucia | Dendroica delicata | Ungraded | |
| Warbler, Streaked Scrub | Scotocerca inquieta | Ungraded | |
| Warbler, Stub-tailed | Urosphena squameiceps | Ungraded | |
| Warbler, Subalpine | Sylvia cantillans | Scarce | |
| Warbler, Sulphur-bellied | Phylloscopus griseolus | Ungraded | |
| Warbler, Swainson's | Limnothlypis swainsonii | Ungraded | |
| Warbler, Sykes's | Iduna rama | Mega | |
| Warbler, Tennessee | Leiothlypis peregrina | Mega | |
| Warbler, Thick-billed | Iduna aedon | Mega | |
| Warbler, Three-striped | Basileuterus tristriatus | Ungraded | |
| Warbler, Tickell's Leaf | Phylloscopus affinis | Ungraded | |
| Warbler, Townsend's | Dendroica townsendi | Ungraded | |
| Warbler, Tristram's | Sylvia deserticola | Ungraded | |
| Warbler, Two-barred Greenish | Phylloscopus plumbeitarsus | Mega | |
| Warbler, Tytler's Leaf | Phylloscopus tytleri | Ungraded | |
| Warbler, Upcher's | Hippolais languida | Mega | |
| Warbler, Victorin's | Cryptillas victorini | Ungraded | |
| Warbler, Western Bonelli's | Phylloscopus bonelli | Rare | |
| Warbler, Western Olivaceous | Iduna opaca | Mega | |
| Warbler, Western Orphean | Sylvia hortensis | Mega | |
| Warbler, Western Subalpine | Sylvia cantillans cantillans | Scarce | |
| Warbler, White-browed Chinese | Rhopophilus pekinensis | Ungraded | |
| Warbler, White-browed Tit- | Leptopoecile sophiae | Ungraded | |
| Warbler, White-tailed Leaf- | Phylloscopus davisoni | Ungraded | |
| Warbler, Willow | Phylloscopus trochilus | Common | |
| Warbler, Wilson's | Cardellina pusilla | Mega | |
| Warbler, Wood | Phylloscopus sibilatrix | Local | |
| Warbler, Worm-eating | Helmitheros vermivorum | Ungraded | |
| Warbler, Yellow | Dendroica petechia | Mega | |
| Warbler, Yellow-browed | Phylloscopus inornatus | Scarce | |
| Warbler, Yellow-headed | Teretistris fernandinae | Ungraded | |
| Warbler, Yellow-rumped | Setophaga coronata | Mega | |
| Warbler, Yellow-throated | Setophaga dominica | Mega | |
| Warbler, Yemen | Sylvia buryi | Ungraded | |
| Warbler-Finch, Grey | Certhidea fusca | Ungraded | |
| warblers, Sylvia | Sylvia | Ungraded | |
| Watercock | Gallicrex cinerea | Ungraded | |
| Waterhen, White-breasted | Amaurornis phoenicurus | Ungraded | |
| Waterthrush, Louisiana | Parkesia motacilla | Mega | |
| Waterthrush, Northern | Parkesia noveboracensis | Mega | |
| Wattlebird, Little | Anthochaera chrysoptera | Ungraded | |
| Wattlebird, Red | Anthochaera carunculata | Ungraded | |
| Wattlebird, Western | Anthochaera lunulata | Ungraded | |
| Wattlebird, Yellow | Anthochaera paradoxa | Ungraded | |
| Wattle-eye, Brown-throated | Platysteira cyanea | Ungraded | |
| Wattle-eye, Chestnut | Platysteira castanea | Ungraded | |
| Waxbill, Arabian | Estrilda rufibarba | Ungraded | |
| Waxbill, Black-crowned | Estrilda nonnula | Ungraded | |
| Waxbill, Black-faced | Estrilda erythronotos | Ungraded | |
| Waxbill, Black-rumped | Estrilda troglodytes | Ungraded | |
| Waxbill, Common | Estrilda astrild | Ungraded | |
| Waxbill, Crimson-rumped | Estrilda rhodopyga | Ungraded | |
| Waxbill, Fawn-breasted | Estrilda paludicola | Ungraded | |
| Waxbill, Lavender | Estrilda caerulescens | Ungraded | |
| Waxbill, Orange-cheeked | Estrilda melpoda | Ungraded | |
| Waxbill, Swee | Coccopygia melanotis | Ungraded | |
| Waxbill, Violet-eared | Uraeginthus granatina | Ungraded | |
| Waxbill, Yellow-bellied | Coccopygia melanotis | Ungraded | |
| Waxbill, Zebra | Amandava subflava | Ungraded | |
| Waxbills, grass finches, munias and allies | Estrildidae | Ungraded | |
| Waxwing | Bombycilla garrulus | Local | |
| Waxwing, Cedar | Bombycilla cedrorum | Mega | |
| Waxwing, Japanese | Bombycilla japonica | Ungraded | |
| Weaver sp. | Ploceidae | Ungraded | |
| Weaver, Baglafecht | Ploceus baglafecht | Ungraded | |
| Weaver, Baya | Ploceus philippinus | Ungraded | |
| Weaver, Black-billed | Ploceus melanogaster | Ungraded | |
| Weaver, Black-breasted | Ploceus benghalensis | Ungraded | |
| Weaver, Black-capped Social | Pseudonigrita cabanisi | Ungraded | |
| Weaver, Black-headed | Ploceus melanocephalus | Ungraded | |
| Weaver, Black-necked | Ploceus nigricollis | Ungraded | |
| Weaver, Cape | Ploceus capensis | Ungraded | |
| Weaver, Chestnut | Ploceus rubiginosus | Ungraded | |
| Weaver, Chestnut-crowned Sparrow- | Plocepasser superciliosus | Ungraded | |
| Weaver, Donaldson-Smith's Sparrow- | Plocepasser donaldsoni | Ungraded | |
| Weaver, Forest | Ploceus bicolor | Ungraded | |
| Weaver, Golden Palm | Ploceus bojeri | Ungraded | |
| Weaver, Golden-backed | Ploceus jacksoni | Ungraded | |
| Weaver, Grey-capped Social | Pseudonigrita arnaudi | Ungraded | |
| Weaver, Holub's Golden | Ploceus xanthops | Ungraded | |
| Weaver, Lesser Masked | Ploceus intermedius | Ungraded | |
| Weaver, Little | Ploceus luteolus | Ungraded | |
| Weaver, Loango | Ploceus subpersonatus | Ungraded | |
| Weaver, Maxwell's Black | Ploceus albinucha | Ungraded | |
| Weaver, Northern Brown-throated | Ploceus castanops | Ungraded | |
| Weaver, Northern Masked | Ploceus taeniopterus | Ungraded | |
| Weaver, Orange | Ploceus aurantius | Ungraded | |
| Weaver, Principe Golden | ploceus princeps | Ungraded | |
| Weaver, Red-billed Buffalo- | Bubalornis niger | Ungraded | |
| Weaver, Red-headed | Anaplectes rubriceps | Ungraded | |
| Weaver, Rufous-tailed | Histurgops ruficaudus | Ungraded | |
| Weaver, Rüppell's | Ploceus galbula | Ungraded | |
| Weaver, Sakalava | Ploceus sakalava | Ungraded | |
| Weaver, Sao Tome | Ploceus sanctithomae | Ungraded | |
| Weaver, Scaly-feathered | Sporopipes squamifrons | Ungraded | |
| Weaver, Slender-billed | Ploceus pelzelni | Ungraded | |
| Weaver, Social | Philetairus socius | Ungraded | |
| Weaver, Southern Brown-throated | Ploceus xanthopterus | Ungraded | |
| Weaver, Southern Masked | Ploceus velatus | Ungraded | |
| Weaver, Speckle-fronted | Sporopipes frontalis | Ungraded | |
| Weaver, Spectacled | Ploceus ocularis | Ungraded | |
| Weaver, Speke's | Ploceus spekei | Ungraded | |
| Weaver, Streaked | Ploceus manyar | Ungraded | |
| Weaver, Taveta Golden | Ploceus castaneiceps | Ungraded | |
| Weaver, Thick-billed | Amblyospiza albifrons | Ungraded | |
| Weaver, Vieillot's Black | Ploceus nigerrimus | Ungraded | |
| Weaver, Village | Ploceus cucullatus | Ungraded | |
| Weaver, Vitelline Masked | Ploceus vitellinus | Ungraded | |
| Weaver, White-browed Sparrow- | Plocepasser mahali | Ungraded | |
| Weaver, White-headed Buffalo- | Dinemellia dinemelli | Ungraded | |
| Weaver, Yellow | Ploceus subaureus | Ungraded | |
| Weaver, Yellow-mantled | Ploceus tricolor | Ungraded | |
| Wedgebill, Chiming | Psophodes occidentalis | Ungraded | |
| Weebill | Smicrornis brevirostris | Ungraded | |
| Weka | Gallirallus australis | Ungraded | |
| Wheatear sp. | Oenanthe | Rare | |
| Wheatear, Abyssinian | Oenanthe lugubris | Ungraded | |
| Wheatear, Black | Oenanthe leucura | Mega | |
| Wheatear, Black/White-crowned Black | Oenanthe leucura/leucopyga | Mega | |
| Wheatear, Black-eared | Oenanthe hispanica | Rare | |
| Wheatear, Black-eared/Pied | Oenanthe hispanica/pleschanka | Rare | |
| Wheatear, Capped | Oenanthe pileata | Ungraded | |
| Wheatear, Cyprus Pied | Oenanthe cypriaca | Ungraded | |
| Wheatear, Desert | Oenanthe deserti | Rare | |
| Wheatear, Eastern Black-eared | Oenanthe hispanica melanoleuca | Mega | |
| Wheatear, Finsch's | Oenanthe finschii | Mega | |
| Wheatear, Hooded | Oenanthe monacha | Ungraded | |
| Wheatear, Hume's | Oenanthe albonigra | Ungraded | |
| Wheatear, Isabelline | Oenanthe isabellina | Mega | |
| Wheatear, Kurdish | Oenanthe xanthoprymna | Ungraded | |
| Wheatear, Mountain | Oenanthe monticola | Ungraded | |
| Wheatear, Mourning | Oenanthe lugens | Ungraded | |
| Wheatear, Northern | Oenanthe oenanthe | Common | |
| Wheatear, Pied | Oenanthe pleschanka | Rare | |
| Wheatear, Red-breasted | Oenanthe bottae | Ungraded | |
| Wheatear, Red-rumped | Oenanthe moesta | Ungraded | |
| Wheatear, Red-tailed | Oenanthe chrysopygia | Mega | |
| Wheatear, Seebohm's | Oenanthe oenanthe seebohmi | Ungraded | |
| Wheatear, South Arabian | Oenanthe lugentoides | Ungraded | |
| Wheatear, Variable | Oenanthe picata | Ungraded | |
| Wheatear, Western Black-eared | Oenanthe hispanica hispanica | Ungraded | |
| Wheatear, White-crowned Black | Oenanthe leucopyga | Mega | |
| Whimbrel | Numenius phaeopus | Local | |
| Whimbrel, Hudsonian | Numenius hudsonicus | Mega | |
| Whinchat | Saxicola rubetra | Common | |
| Whipbird, Eastern | Psophodes olivaceus | Ungraded | |
| Whip-poor-will, Eastern | Antrostomus vociferus | Ungraded | |
| Whistler, Golden | Pachycephala pectoralis | Ungraded | |
| Whistler, Mangrove | Pachycephala grisola | Ungraded | |
| Whistler, Red-lored | Pachycephala rufogularis | Ungraded | |
| Whistler, Rufous | Pachycephala rufiventris | Ungraded | |
| Whistler, Rufous-naped | Aleadryas rufinucha | Ungraded | |
| White-eye, Abyssinian | Zosterops abyssinicus | Ungraded | |
| White-eye, African Yellow | Zosterops senegalensis | Ungraded | |
| White-eye, Cape | Zosterops capensis | Ungraded | |
| White-eye, Chestnut-flanked | Zosterops erythropleurus | Ungraded | |
| White-eye, Cream-throated | Zosterops atriceps | Ungraded | |
| White-eye, Green-backed | Zosterops xanthochroa | Ungraded | |
| White-eye, Japanese | Zosterops japonicus | Ungraded | |
| White-eye, Malagasy | Zosterops maderaspatanus | Ungraded | |
| White-eye, Mauritius Grey | Zosterops borbonicus mauritianus | Ungraded | |
| White-eye, Mauritius Olive | Zosterops chloronothos | Ungraded | |
| White-eye, Montane | Zosterops poliogaster | Ungraded | |
| White-eye, Oriental | Zosterops palpebrosus | Ungraded | |
| White-eye, Pale | Zosterops pallidus | Ungraded | |
| White-eye, Sri Lanka | Zosterops ceylonensis | Ungraded | |
| White-eye, Yellow | Zosterops luteus | Ungraded | |
| Whiteface, Southern | Aphelocephala leucopsis | Ungraded | |
| Whitehead | Mohoua albicilla | Ungraded | |
| Whitestart, Spectacled | Myioborus melanocephalus | Ungraded | |
| Whitethroat, 'Central Asian' Lesser | Sylvia curruca halimodendri | Rare | |
| Whitethroat, Common | Sylvia communis | Common | |
| Whitethroat, Common (ssp. icterops) | Sylvia communis icterops | Ungraded | |
| Whitethroat, Desert | Sylvia minula | Rare | |
| Whitethroat, Hume's Lesser | Sylvia althaea | Ungraded | |
| Whitethroat, Lesser | Sylvia curruca | Common | |
| Whitethroat, Siberian Lesser | Sylvia curruca blythi | Scarce | |
| Whitetip, Purple-bibbed | Urosticte benjamini | Ungraded | |
| Whydah, Long-tailed Paradise | Vidua paradisaea | Ungraded | |
| Whydah, Long-tailed Paradise- | Vidua interjecta | Ungraded | |
| Whydah, Pin-tailed | Vidua macroura | Ungraded | |
| Whydah, Shaft-tailed | Vidua regia | Ungraded | |
| Whydah, Straw-tailed | Vidua fischeri | Ungraded | |
| Widowbird, Fan-tailed | Euplectes axillaris | Ungraded | |
| Widowbird, Red-collared | Euplectes ardens | Ungraded | |
| Widowbird, White-winged | Euplectes albonotatus | Ungraded | |
| Widowbird, Yellow-mantled | Euplectes macroura | Ungraded | |
| Wigeon | Anas penelope | Common | |
| Wigeon, American | Anas americana | Scarce | |
| Wigeon, American x Wigeon hybrid | Anas americana x penelope | Scarce | |
| Wigeon, Amsterdam | Anas marecula | Ungraded | |
| Wigeon, Chiloe | Anas sibilatrix | Ungraded | |
| Willet | Tringa semipalmata | Mega | |
| Willie Wagtail | Rhipidura leucophrys | Ungraded | |
| Woodcock | Scolopax rusticola | Local | |
| Woodcock, American | Scolopax minor | Mega | |
| Woodcreeper, Barred | Dendrocolaptes certhia | Ungraded | |
| Woodcreeper, Black-banded | Dendrocolaptes picumnus | Ungraded | |
| Woodcreeper, Black-striped | Xiphorhynchus lachrymosus | Ungraded | |
| Woodcreeper, Buff-throated | Xiphorhynchus guttatus | Ungraded | |
| Woodcreeper, Cinnamon-throated | Dendrexetastes rufigula | Ungraded | |
| Woodcreeper, Cocoa | Xiphorhynchus susurrans | Ungraded | |
| Woodcreeper, Ivory-billed | Xiphorhynchus flavigaster | Ungraded | |
| Woodcreeper, Montane | Lepidocolaptes lacrymiger | Ungraded | |
| Woodcreeper, Narrow-billed | Lepidocolaptes angustirostris | Ungraded | |
| Woodcreeper, Northern Barred | Dendrocolaptes sanctithomae | Ungraded | |
| Woodcreeper, Olivaceous | Sittasomus griseicapillus | Ungraded | |
| Woodcreeper, Plain-brown | Dendrocincla fuliginosa | Ungraded | |
| Woodcreeper, Spotted | Xiphorhynchus erythropygius | Ungraded | |
| Woodcreeper, Straight-billed | Dendroplex picus | Ungraded | |
| Woodcreeper, Streak-headed | Lepidocolaptes souleyetii | Ungraded | |
| Woodcreeper, Striped | Xiphorhynchus obsoletus | Ungraded | |
| Woodcreeper, Strong-billed | Xiphocolaptes promeropirhynchus | Ungraded | |
| Woodcreeper, Tyrannine | Dendrocincla tyrannina | Ungraded | |
| Woodcreeper, Wedge-billed | Glyphorynchus spirurus | Ungraded | |
| Wood-hoopoe, Green | Phoeniculus purpureus | Ungraded | |
| Wood-hoopoe, Violet | Phoeniculus damarensis | Ungraded | |
| Woodnymph, Blue-crowned | Thalurania colombica | Ungraded | |
| Woodnymph, Fork-tailed | Thalurania furcata | Ungraded | |
| Woodnymph, Green-crowned | Thalurania fannyi | Ungraded | |
| Woodnymph, Violet-capped | Thalurania glaucopis | Ungraded | |
| Woodpecker, Acorn | Melanerpes formicivorus | Ungraded | |
| Woodpecker, American Three-toed | Picoides dorsalis | Ungraded | |
| Woodpecker, Andaman | Dryocopus hodgei | Ungraded | |
| Woodpecker, Arabian | Dendrocopos dorae | Ungraded | |
| Woodpecker, Arizona | Picoides stricklandi | Ungraded | |
| Woodpecker, Banded | Chrysophlegma miniaceum | Ungraded | |
| Woodpecker, Bay | Blythipicus pyrrhotis | Ungraded | |
| Woodpecker, Bearded | Dendropicos namaquus | Ungraded | |
| Woodpecker, Bennett's | Campethera bennettii | Ungraded | |
| Woodpecker, Black | Dryocopus martius | Mega | |
| Woodpecker, Black-backed | Picoides arcticus | Ungraded | |
| Woodpecker, Black-cheeked | Melanerpes pucherani | Ungraded | |
| Woodpecker, Black-necked | Colaptes atricollis | Ungraded | |
| Woodpecker, Blond-crested | Celeus flavescens | Ungraded | |
| Woodpecker, Blood-colored | Veniliornis sanguineus | Ungraded | |
| Woodpecker, Brown-backed | Dendropicos obsoletus | Ungraded | |
| Woodpecker, Brown-eared | Campethera caroli | Ungraded | |
| Woodpecker, Brown-fronted | Dendrocopos auriceps | Ungraded | |
| Woodpecker, Cardinal | Dendropicos fuscescens | Ungraded | |
| Woodpecker, Checkered | Picoides mixtus | Ungraded | |
| Woodpecker, Chestnut | Celeus elegans | Ungraded | |
| Woodpecker, Chestnut-colored | Celeus castaneus | Ungraded | |
| Woodpecker, Cinnamon | Celeus loricatus | Ungraded | |
| Woodpecker, Cream-colored | Celeus flavus | Ungraded | |
| Woodpecker, Crimson-bellied | Campephilus haematogaster | Ungraded | |
| Woodpecker, Crimson-breasted | Dendrocopos cathpharius | Ungraded | |
| Woodpecker, Crimson-crested | Campephilus melanoleucos | Ungraded | |
| Woodpecker, Crimson-mantled | Piculus rivolii | Ungraded | |
| Woodpecker, Cuban Green | Xiphidiopicus percussus | Ungraded | |
| Woodpecker, Downy | Picoides pubescens | Ungraded | |
| Woodpecker, Fine-spotted | Campethera punctuligera | Ungraded | |
| Woodpecker, Fire-bellied | Dendropicos pyrrhogaster | Ungraded | |
| Woodpecker, Fulvous-breasted | Picoides macei | Ungraded | |
| Woodpecker, Gila | Melanerpes uropygialis | Ungraded | |
| Woodpecker, Golden-cheeked | Melanerpes chrysogenys | Ungraded | |
| Woodpecker, Golden-fronted | Melanerpes aurifrons | Ungraded | |
| Woodpecker, Golden-green | Piculus chrysochloros | Ungraded | |
| Woodpecker, Golden-naped | Melanerpes chrysauchen | Ungraded | |
| Woodpecker, Golden-olive | Piculus rubiginosus | Ungraded | |
| Woodpecker, Golden-tailed | Campethera abingoni | Ungraded | |
| Woodpecker, Great Slaty | Mulleripicus pulverulentus | Ungraded | |
| Woodpecker, Great Spotted | Dendrocopos major | Common | |
| Woodpecker, Green | Picus viridis | Common | |
| Woodpecker, Green-barred | Colaptes melanochloros | Ungraded | |
| Woodpecker, Grey | Dendropicos goertae | Ungraded | |
| Woodpecker, Grey capped Pygmy | Dendrocopos canicapillus | Ungraded | |
| Woodpecker, Grey-crowned | Piculus auricularis | Ungraded | |
| Woodpecker, Grey-headed | Picus canus | Mega | |
| Woodpecker, Ground | Geocolaptes olivaceus | Ungraded | |
| Woodpecker, Guadeloupe | Melanerpes herminieri | Ungraded | |
| Woodpecker, Guayaquil | Campephilus gayaquilensis | Ungraded | |
| Woodpecker, Hairy | Picoides villosus | Ungraded | |
| Woodpecker, Heart-spotted | Hemicircus canente | Ungraded | |
| Woodpecker, Helmeted | Dryocopus galeatus | Ungraded | |
| Woodpecker, Himalayan | Dendrocopos himalayensis | Ungraded | |
| Woodpecker, Hispaniolan | Melanerpes striatus | Ungraded | |
| Woodpecker, Hoffmann's | Melanerpes hoffmannii | Ungraded | |
| Woodpecker, Jamaican | Melanerpes radiolatus | Ungraded | |
| Woodpecker, Japanese Pygmy | Dendrocopos kizuki | Ungraded | |
| Woodpecker, Laced | Picus vittatus | Ungraded | |
| Woodpecker, Ladder-backed | Picoides scalaris | Ungraded | |
| Woodpecker, Lesser Spotted | Dendrocopos minor | Local | |
| Woodpecker, Levaillant's Green | Picus vaillantii | Ungraded | |
| Woodpecker, Lewis's | Melanerpes lewis | Ungraded | |
| Woodpecker, Lineated | Dryocopus lineatus | Ungraded | |
| Woodpecker, Little | Veniliornis passerinus | Ungraded | |
| Woodpecker, Little Green | Campethera maculosa | Ungraded | |
| Woodpecker, Magellanic | Campephilus magellanicus | Ungraded | |
| Woodpecker, Middle Spotted | Dendrocopos medius | Mega | |
| Woodpecker, Nubian | Campethera nubica | Ungraded | |
| Woodpecker, Nuttall's | Picoides nuttallii | Ungraded | |
| Woodpecker, Okinawa | Sapheopipo noguchii | Ungraded | |
| Woodpecker, Pale-billed | Campephilus guatemalensis | Ungraded | |
| Woodpecker, Pileated | Dryocopus pileatus | Ungraded | |
| Woodpecker, Powerful | Campephilus pollens | Ungraded | |
| Woodpecker, Puerto Rican | Melanerpes portoricensis | Ungraded | |
| Woodpecker, Red-bellied | Melanerpes carolinus | Ungraded | |
| Woodpecker, Red-cockaded | Picoides borealis | Ungraded | |
| Woodpecker, Red-crowned | Melanerpes rubricapillus | Ungraded | |
| Woodpecker, Red-headed | Melanerpes erythrocephalus | Ungraded | |
| Woodpecker, Red-necked | Campephilus rubricollis | Ungraded | |
| Woodpecker, Red-stained | Veniliornis affinis | Ungraded | |
| Woodpecker, Ringed | Celeus torquatus | Ungraded | |
| Woodpecker, Rufous | Micropternus brachyurus | Ungraded | |
| Woodpecker, Rufous-bellied | Dendrocopos hyperythrus | Ungraded | |
| Woodpecker, Rufous-headed | Celeus spectabilis | Ungraded | |
| Woodpecker, Rufous-winged | Piculus simplex | Ungraded | |
| Woodpecker, Scaly-bellied | Picus squamatus | Ungraded | |
| Woodpecker, Scaly-breasted | Celeus grammicus | Ungraded | |
| Woodpecker, Scarlet-backed | Veniliornis callonotus | Ungraded | |
| Woodpecker, Sind | Dendrocopos assimilis | Ungraded | |
| Woodpecker, Smoky-brown | Veniliornis fumigatus | Ungraded | |
| Woodpecker, Spot-breasted | Colaptes punctigula | Ungraded | |
| Woodpecker, Streak-throated | Picus xanthopygaeus | Ungraded | |
| Woodpecker, Stripe-cheeked | Piculus callopterus | Ungraded | |
| Woodpecker, Sunda Pygmy | Dendrocopos moluccensis | Ungraded | |
| Woodpecker, Syrian | Dendrocopos syriacus | Mega | |
| Woodpecker, Three-toed | Picoides tridactylus | Mega | |
| Woodpecker, Waved | Celeus undatus | Ungraded | |
| Woodpecker, West Indian | Melanerpes superciliaris | Ungraded | |
| Woodpecker, White | Melanerpes candidus | Ungraded | |
| Woodpecker, White-backed | Dendrocopos leucotos | Mega | |
| Woodpecker, White-bellied | Dryocopus javensis | Ungraded | |
| Woodpecker, White-fronted | Melanerpes cactorum | Ungraded | |
| Woodpecker, White-headed | Picoides albolarvatus | Ungraded | |
| Woodpecker, White-naped | Chrysocolaptes festivus | Ungraded | |
| Woodpecker, White-throated | Piculus leucolaemus | Ungraded | |
| Woodpecker, White-winged | Dendrocopos leucopterus | Ungraded | |
| Woodpecker, Yellow-browed | Piculus aurulentus | Ungraded | |
| Woodpecker, Yellow-crowned | Dendrocopos mahrattensis | Ungraded | |
| Woodpecker, Yellow-fronted | Melanerpes flavifrons | Ungraded | |
| Woodpecker, Yellow-throated | Piculus flavigula | Ungraded | |
| Woodpecker, Yellow-tufted | Melanerpes cruentatus | Ungraded | |
| Woodpecker, Yellow-vented | Veniliornis dignus | Ungraded | |
| Woodpecker, Yucatan | Melanerpes pygmaeus | Ungraded | |
| Woodshrike, Common | Tephrodornis pondicerianus | Ungraded | |
| Woodshrike, Large | Tephrodornis virgatus | Ungraded | |
| Woodshrike, Sri Lanka | Tephrodornis affinis | Ungraded | |
| Woodstar, Amethyst | Calliphlox amethystina | Ungraded | |
| Woodstar, Magenta-throated | Philodice bryantae | Ungraded | |
| Woodstar, Purple-throated | Philodice mitchellii | Ungraded | |
| Woodstar, Santa Marta | Chaetocercus astreans | Ungraded | |
| Woodstar, Short-tailed | Myrmia micrura | Ungraded | |
| Woodstar, White-bellied | Chaetocercus mulsant | Ungraded | |
| Woodswallow, Black-faced | Artamus cinereus | Ungraded | |
| Woodswallow, Fiji | Artamus mentalis | Ungraded | |
| Woodswallow, Great | Artamus maximus | Ungraded | |
| Woodswallow, White-browed | Artamus superciliosus | Ungraded | |
| Wren | Troglodytes troglodytes | Common | |
| Wren Warbler, Grey | Camaroptera simplex | Ungraded | |
| Wren, Antioquia | Thryophilus sernai | Ungraded | |
| Wren, Apolinar's | Cistothorus apolinari | Ungraded | |
| Wren, Band-backed | Campylorhynchus zonatus | Ungraded | |
| Wren, Bay | Cantorchilus nigricapillus | Ungraded | |
| Wren, Bewick's | Thryomanes bewickii | Ungraded | |
| Wren, Bicolored | Campylorhynchus griseus | Ungraded | |
| Wren, Black-bellied | Pheugopedius fasciatoventris | Ungraded | |
| Wren, Buff-breasted | Cantorchilus leucotis | Ungraded | |
| Wren, Cactus | Campylorhynchus brunneicapillus | Ungraded | |
| Wren, Canyon | Catherpes mexicanus | Ungraded | |
| Wren, Carolina | Thryothorus ludovicianus | Ungraded | |
| Wren, Cobb's | Troglodytes cobbi | Ungraded | |
| Wren, Fasciated | Campylorhynchus fasciatus | Ungraded | |
| Wren, House | Troglodytes aedon | Ungraded | |
| Wren, Long-billed | Cantorchilus longirostris | Ungraded | |
| Wren, Marsh | Cistothorus palustris | Ungraded | |
| Wren, Mountain | Troglodytes solstitialis | Ungraded | |
| Wren, New Zealand Rock | Xenicus gilviventris | Ungraded | |
| Wren, Plain | Cantorchilus modestus | Ungraded | |
| Wren, Red-backed Fairy- | Malurus melanocephalus | Ungraded | |
| Wren, Rock | Salpinctes obsoletus | Ungraded | |
| Wren, Rufous | Cinnycerthia unirufa | Ungraded | |
| Wren, Rufous-breasted | Pheugopedius rutilus | Ungraded | |
| Wren, Rufous-naped | Campylorhynchus rufinucha | Ungraded | |
| Wren, Sedge | Cistothorus platensis | Ungraded | |
| Wren, Song | Cyphorhinus phaeocephalus | Ungraded | |
| Wren, Splendid Fairy- | Malurus splendens | Ungraded | |
| Wren, Spotted | Campylorhynchus gularis | Ungraded | |
| Wren, Stripe-backed | Campylorhynchus nuchalis | Ungraded | |
| Wren, Superb Fairy- | Malurus cyaneus | Ungraded | |
| Wren, Thrush-like | Campylorhynchus turdinus | Ungraded | |
| Wren, Variegated Fairy- | Malurus lamberti | Ungraded | |
| Wren, White-browed Scrub | Sericornis frontalis | Ungraded | |
| Wren, Zapata | Ferminia cerverai | Ungraded | |
| Wren-Babbler, Nepal | Pnoepyga immaculata | Ungraded | |
| Wren-Babbler, Rusty-throated | Spelaeornis badeigularis | Ungraded | |
| Wren-spinetail, Bay-capped | Spartonoica maluroides | Ungraded | |
| Wrentit | Chamaea fasciata | Ungraded | |
| Wren-Warbler, Barred | Calamonastes fasciolatus | Ungraded | |
| Wrybill | Anarhynchus frontalis | Ungraded | |
| Wryneck | Jynx torquilla | Scarce | |
| Wryneck, Red-throated | Jynx ruficollis | Ungraded | |
| Xenops, Plain | Xenops minutus | Ungraded | |
| Xenops, Streaked | Xenops rutilans | Ungraded | |
| Yellow-finch, Orange-fronted | Sicalis columbiana | Ungraded | |
| Yellowhammer | Emberiza citrinella | Common | |
| Yellowhammer x Pine Bunting | Emberiza citrinella x leucocephalus | Scarce | |
| Yellowhead | Mohoua ochrocephala | Ungraded | |
| Yellowlegs sp. | Tringa flavipes/melanoleuca | Ungraded | |
| Yellowlegs, Greater | Tringa melanoleuca | Mega | |
| Yellowlegs, Lesser | Tringa flavipes | Rare | |
| Yellownape, Greater | Picus flavinucha | Ungraded | |
| Yellownape, Lesser | Picus chlorolophus | Ungraded | |
| Yellowthroat, Common | Geothlypis trichas | Mega | |
| Yellowthroat, Grey-crowned | Geothlypis poliocephala | Ungraded | |
| Yellowthroat, Masked | Geothlypis aequinoctialis | Ungraded | |
| Yuhina, Stripe-throated | Yuhina gularis | Ungraded | |
| Yuhina, White-collared | Yuhina diademata | Ungraded | |
| Zoothera sp. | Zoothera | Mega | |
| | 5424 species listed. |
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