20 Gadwall
Just recently there have been decent numbers (for Hollingworth Lake) of Gadwall on the reserve. Not every day, but quite regularly. This morning I counted 20, which is certainly the most I've ever had at once, and Simon suggested this might even be a record count for Rochdale.
I couldn't get them all in the frame at once, and they were quite mobile, but here's a group of 13 of them.
Gadwall, 1/500 sec, f/7.1, 500 mm, ISO 1000 (view full size image)