Taken a few days ago in CO. Aside from the numerous RBGU, I think there is a first cycle Glaucous Gull in the back with a few Herrings and possibly something else? Thanks!
Not sure on this one.RSCN9833 by Phalarope73, on Flickr
Checklist with highest number of species - http://ebird.org/ebird/view/checklist/S24316657
Favorite list - http://ebird.org/ebird/view/checklist/S29336233 (Willet and Plover were both second county records)