Slaty-backed Gull (schistisagus) / オオセグロカモメ / 큰재갈매기

(last update: December 2015)

Kim Seog-min (South Korea)
Hideo Shimura (Japan)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)

Slaty-backed Gull (schistisagus) 1st cycle (1CY), October 13 2012, Nemuro, Hokkaido, Japan. Picture: Shiroto.

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Extensive dark on tail, hefty bill, head shape and small eye typical for this taxon. In this bird, widely spaced undertail covert barring and more than average barring in juvenile tertials and wing-coverts may be an indication of Vega Gull influences.