Black-tailed Gull (crassirostris) / ウミネコ / 괭이갈매기

(last update: December 2015)

Coordinators:
Kim Seog-min (South Korea)
Hideo Shimura (Japan)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)

Black-tailed Gull (crassirostris) 1st cycle / 1CY October - December

Birds in 1st cycle plumage after post-juvenile moult (1st pre-basic molt).

Black-tailed Gull (crassirostris) F07 1st cycle (1CY), December 30 2010, Choshi, Japan. Picture: Akimichi Ariga.
Black-tailed Gull (crassirostris) code? 1st cycle (1CY), December 23 2012, Choshi, Japan. Picture: Akimichi Ariga.
Black-tailed Gull (crassirostris) 1st cycle (1CY), November 08 2014, Chidiwa Unzen city, Nagasaki, Japan. Picture: Nobuo Fukushima.
Black-tailed Gull (crassirostris) 1st cycle (1CY), October 29 2014, Chidiwa Unzen city, Nagasaki, Japan. Picture: Nobuo Fukushima.
Black-tailed Gull (crassirostris) 1st cycle (1CY), October 11 2015, Chidiwa Unzen city, Nagasaki, Japan. Picture: Nobuo Fukushima.
Black-tailed Gull (crassirostris) 1st cycle (1CY), November 03 2010, Yodogahama, Japan. Picture: Hiro.
Black-tailed Gull (crassirostris) 1st cycle (1CY), November 11 2014, Chidiwa Unzen city, Nagasaki, Japan. Picture: Nobuo Fukushima.
Black-tailed Gull (crassirostris) 1st cycle (1CY), October 20 2011, Lake Koto, Tokyo, Japan. Picture: リスキーマウス.