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) 2nd cycle (2CY), October 20 2011, Lake Koto, Tokyo, Japan. Picture: リスキーマウス.

Please visit リスキーマウス's blog.

2nd generation flight feathers: outer primaries without bold white tips. Many brown coverts.