[cobirds] Drake Lake Gulls ID Challenge

http://coloradobirder.ning.com/photo/albums/drake-lake-gulls-id-challenge
(When viewing an individual photo; in lower right area, below photo,
you can click "View Full Size")

Drake Lake field about .3m south of Highway 14 (Severance-area) on
west was chockful of gulls this morning. In the photo album I used
red line/arrow to point out gulls that looked different from the Ring-
billed Gull reference point. I believe I might have shots of the
Great Black-backed Gull in foreground of 4-6 photos.

If you can ID some of them, please let me know.

Thanks Gary Lefko, Nunn
http://coloradobirder.ning.com/
Mobile: http://coloradobirder.ning.com/m

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