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 21 2015, Brownsville landfill, TX. Picture: Martin Reid.

Immature bird with pattern of 3rd generation secondaries just visible beneath the tips of the greater coverts. 3rd gen primaries with only small tips and no mirror on P10. Lots of black in tail.