Echoing the points made by Kevin, I assume we are discussing the subadult bird on the right?
My immediate impression is of a Great Black-backed Gull (charcoal rather than bluish tone of mantle, rather flat head shape, square proportions of body, limited white tertial crescent, dull leg color etc) but of course would like to see additional images and hear from the observers as to what focused their attention. The size difference mentioned earlier isn't especially obvious in this picture and one has to remember that male and female gulls differ in size, this being most noticeable in the large species. Cheers, Angus Wilson New York City -- NYSbirds-L List Info: http://www.NortheastBirding.com/NYSbirdsWELCOME http://www.NortheastBirding.com/NYSbirdsRULES http://www.NortheastBirding.com/NYSbirdsSubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nysbirds-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NYSBirds-L 3) http://birdingonthe.net/mailinglists/NYSB.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
