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 (4CY), June 26 2015, Seoul, South Korea. Picture: Emes Kei.

Please visit Emes's photostream on Flickr.

Birds in complete moult: P1-P2 have been shed. In this immature bird, note the black centres on the secondaries, the brown wash over the wing-coverts and the dark centres on the primary coverts. Also note that the old tail-feathers must have had obvious white tips (although largely worn away by this time of the year).