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

(last update: December 2015)

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

Black-tailed Gull (crassirostris) adult, January 07 2015, Chidiwa Unzen city, Nagasaki, Japan. Picture: Nobuo Fukushima.

Please visit Nobuo's website.

Only very indistinct mottling on the back of the head, overall largely clean white on head and on the underparts. Obvious tips on outer primaries. Note blackish centre on greater primary coverts.