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) adult, February 24 2008, St. John's, Newfoundland, Canada. Picture: Bruce Mactavish.

Complete sub-terminal black band on P10. White innerweb on P10 end in 90 degrees angle, quite abrupt, not gradually (oblique). Tongue on P10 >1/2 length of visible feather.