American Herring Gull (smithsonianus)

(last update: October 30, 2015)
Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

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American Herring Gull (smithsonianus) H98 4CY, August 04 2010, Jenness Beach, NH. Picture: Lauren Kras.

See websites: Lauren's Flickr photostream & The Gulls Of Appledore

Green H98 was banded as a chick on July 10 2007 on Appledore, now in 4th CY in 2010.

Note only limited black in bill, but dark markings in plumage suggesting immaturity (it is known 'pure' adults may develop some black on the bill in winter - and even vestiges of black in breeding plumage).
Here obvious dark centres on secondaries and much dark in tail.