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 1st cycle (1CY), December 11 2013, Stevenson compost, Tompkins Co, NY. Picture: Kevin McGowan.

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Moult in scapulars: US=100%, LS=100%, TOT SCAPS=100%. Note the 2nd gen body feathers on head, side of breats and flanks, new feathers are darker greyish, contrasting with paler brown worn juvenile feathers.