American Herring Gull (smithsonianus)

(last update: October 30, 2015)

Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

Slaty-backed Gull (schistisagus) 1st cycle (2CY), February 19 2014, Akkeshi, Hokkaidoi, Japan.

See abcdefgewings's Flickr photostream for more pictures from Japan.

Bulky bird. No scapulars replaced. Simple tertial pattern on most birds, but single notched pattern on this bird's lower tertials. Note skirt. Tail almost completely dark. Much white in GC.