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) adult, October 11 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto.

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

Last phase of complete moult: P8 > P7. Orbital ring pink, small red gonys spot on pale yellow bill (pink base) and yellow iris with limited speckling. Broad tertial crescents and secondary tips. Upperparts grey tone about equal to graellsii Lesser Black-backed Gull. Strong pink, short-looking legs.