Slaty-backed Gull (schistisagus) / オオセグロカモメ / 큰재갈매기

(last update: December 2015)
Coordinators:
Kim Seog-min (South Korea)
Hideo Shimura (Japan)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)

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Slaty-backed Gull (schistisagus) 1st cycle (2CY), March 15 2010, Nemuro, Hokkaido, Japan. Picture: Shiroto.

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

Very worn and bleached primaries and overall plumage, reminiscent of spring Glaucous-winged Gull. Much internal patterning in wing-coverts. Most scaps replaced, otherwise juvenile plumage. Pale GC. Black bill with paler base, dark iris.