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) adult, September 13 2011, Acadia National Park Maine, USA. Picture:Thomas Gass.

Bird in complete moult. P7/P10. P8 tip shimmering through. Also moult in secondaries and rectrices.