American Herring Gull (smithsonianus)

(last update: October 30, 2015)

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

American Herring Gull (smithsonianus) sub-adult, October 07 2016, Michigan City, IN. Picture: Amar Ayyash.

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Herring with virtually no mirror on P10 (still growing). P4 with small speck on outer web and marked primary coverts / alula suggest a 4th cycle type.