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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Slaty-backed Gull (schistisagus) 2nd cycle (2CY), October 14 2012, Monbetsu, Hokkaido, Japan. Picture: Shiroto.

Visit Shiroto's website for many more gull pictures from Japan!

Late bird, still in complete moult. P10 old juvenile, completely worn away. P1-P7 new 2nd gen. Central GC missing, exposing the very bleached and worn juvenile secondaries underneath.