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 cycle / 1CY November

Juvenile feathers are worn at the fringes, especially in birds from southern populations. Remarkable fresh juvenile birds probably origin from far northern populations.

Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 07 2011, Miura Kanagawa, Japan. Picture: Michiaki Ujihara.
Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 26 2011, Chiba Prefecture, Japan. Picture: Seichoudoku.
Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 07 2011, Miura Kanagawa, Japan. Picture: Michiaki Ujihara.
Slaty-backed Gull (schistisagus) 1st cycle (1CY), November 07 2011, Miura Kanagawa, Japan. Picture: Michiaki Ujihara.