American Herring Gull (smithsonianus)

(last update: October 30, 2015)

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

American Herring Gull (smithsonianus) 3cy (2nd cycle), February 19 2011, Salisbury State Reservation, Massachusetts. Picture: Paul Corcoran.

Few coverts and upper tertials replaced in partial autumn moult.