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) sub-adult, October 31 2015, Port-aux-Basques, Newfoundland. Picture: Alvan Buckley.

Probably 2nd cycle with amber iris and no clear white tip on P5, but without view on inner primaries, some care may be necessary to fully exclude retarded 3rd cycle birds (the extent of grey on scaps match 3rd cycle birds better).