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) 2nd cycle (2CY), October 21 2014, Chidiwa Unzen city, Nagasaki, Japan. Picture: Nobuo Fukushima.

Please visit Nobuo's website.

2nd gen flight feathers. Most scaps replaced to adult-grey feathers, some with a brown hue. Note yellowish tinge in bill and iris turning paler. Upper tertials and several wing-coverts recently replaced in partial autumn moult, replacing them for greyish adult like feathers.