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) 3rd cycle (4CY), February 04 2007, St. John's, Newfoundland, Canada. Picture: Alan Schmierer.

See Flickr photos by Alan.

Aged on bold white tips of secondaries with grey bases, in combination with many immature markings.