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) sub-adult, August 15 2014, Tokyo, Japan. Picture: Trunck Wood.

Please visit Wood's photostream on Flickr.

Note dark centres on secondaries. Bird in complete moult: P1-P6 new, P9-P10 old.