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 20 2010, Wisconsin, US. Picture: Chris West.

Visit Chris's blog for images.

Obvious dark markings in greater primary coverts and some black in tail.