A pair of long-billed dowitchers has been at this site for a week or two. I had a crack at them today with a 600mm lens with 2 x TC so the quality of pictures was a bit iffy. However, Brian Cracknell who was scoping them at the time drew my attention to the bill tip flexing open and shutting again, something I've never observed before.

Equipment

Canon 1D Mark IV, 600mm f4, 2x TC.