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) 1st cycle (1CY), September 26 2016, Chidiwa Unzen city, Nagasaki, Japan. Picture: Nobuo Fukushima.

Please visit Nobuo's website.

1CY bird with 1st gen flight feathers (tail, primaries and secondaries), and some inner wing-coverts replaced in the post-juvenile moult. Outer wing-coverts still juvenile.