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) 3rd cycle / 3CY October - December

Birds in 3rd cycle plumage, after a subsequent partial autumn moult. The tail-feathers will get white tips now, and the bill looks more adult-like. Still, quite obvious brown on wing-coverts and no white tips on outer primaries.

Black-tailed Gull (crassirostris) 3rd cycle (3CY), October 24 2010, Bangpu Samutprakan, Thailand. Picture: Somchai Kanchanasut.