Thanks, Will, those are helpful. >From the additional photos I see a dirty back of the neck that is very >suggestive of Slaty-back, as well as a sense of the smaller size and maybe >lighter back. But, the bill shape, the extent of the white edging of the >tertials and scapulars, and the leg color are all wrong.
Kevin -----Original Message----- From: bounce-68812739-3714...@list.cornell.edu [mailto:bounce-68812739-3714...@list.cornell.edu] On Behalf Of Will Raup Sent: Thursday, October 04, 2012 7:15 PM To: oceanwander...@gmail.com; NYSBIRDS-L Subject: RE: Update RE: [ebirdsnyc] Fwd: [nysbirds-l] Poss SLATY-BACKED GULL - Cohoes/Waterford I've coped the other 3 photographs that were taken by John Hershey and posted on HM Birds. http://www.flickr.com/photos/danikabelle/8055096162/in/photostream http://www.flickr.com/photos/danikabelle/8055096343/in/photostream http://www.flickr.com/photos/danikabelle/8055096603/in/photostream http://www.flickr.com/photos/danikabelle/8054880897/in/photostream These are all the known photographs at the moment. Will Raup Albany, NY ---------------------------------------- > Date: Thu, 4 Oct 2012 19:09:55 -0400 > Subject: Re: Update RE: [ebirdsnyc] Fwd: [nysbirds-l] Poss > SLATY-BACKED GULL - Cohoes/Waterford > From: oceanwander...@gmail.com > To: nysbird...@list.cornell.edu > > 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.ht > m > > 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/ > > -- -- 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/ -- ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5310 - Release Date: 10/04/12 -- 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/ --
