Noticed this extremely dark mantled lesser black-backed type Gull at Blashford lakes from Tern Hide on 3rd Feb. Intermedius/Fuscus type Lesser has been mentioned as possible ID.
Bird showing extremely elongated appearance, long primary projection , large white mirror on P10 & small mirror on P9 seen in flight, smaller size comparison to Graellsii present, slight streaking collar on neck and very black mantle & wings. No confirmed ID. Anyone in the Blashford Lakes that can get better images if bird still present. Comments Welcome.