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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Slaty-backed Gull (schistisagus) 3rd cycle (3CY), September 15 2009, Nemuro, Hokkaido, Japan. Picture: Hannu Huhtinen.

Active complete moult, moulting to 3rd cycle. P1-P8 new 3rd gen. New 3rd gen tail again showing much black. Moult in rectrices and secondaries, block of central secondaries still old, 2nd gen.