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) 1cy, October 08 2006, St. John's, Newfoundland, Canada. Picture: Bruce Mactavish.

Bird in complete juvenile plumage, without replaced scapulars by early-Ocober. Fringes of scapulars rather neat. White bars on undertail-coverts reduced to paired spots. Extensive dark centres of all greater coverts. Tail complete dark from this angle. Uniform dark apttern on flanks running up into the hindneck.