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, January 02 2010, Choshi, Japan. Picture: Chris Gibbins.

Please visit Chris's Blog for many more pictures! A more elongated bird. Unlike most, P10 of this individual extends beyond P9 and this creates the longer winged impression. Otherwise, it appears typical of smaller (female?) birds.