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)

Slaty-backed Gull (schistisagus) 1st alternate (2CY), May 02 2010, Ayukawa - Kinkazan, Japan. Picture: Shigenobu Aizawa.

Please visit Aizawa's Blog for many more pictures!

Alternate plumage with pale head and underparts. Old coverts and tertials bleached and very worn.