Hi, This group of Dunlin and some (about 4%) Western Sandpipers was on an island in central Grays Harbor on 27 April 2009. A short clip is here:
http://www.youtube.com/watch?v=8JFljuI8Cqw
It may be a tall order to put a number on this group; made more difficult by the less than ideal footage.
It's a lot of birds, but any guesses?
Thanks,
Keith Brady
Olympia, WA