American Herring Gull (smithsonianus)

(last update: October 30, 2015)

Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 12 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto.

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End of the complete moult. 2nd gen flight feathers: outer primaries with rounded tips. Bird with more than average internal lining on wing-coverts and lower scaps. Pale iris and pale pink base to bill.