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)

Glaucous-winged Gull (glausecens) 1st cycle (1CY), December 03 2014, San Simeon, CA. Picture: Angus Molyneux.

Please visit Angus's Flickr photostream, for many more images.

Few upper scaps replaced. Primary tips paler, creamy brown than brown tone of coverts.