Steppe Gull    Larus fuscus barabensis

Steppe Gullbarabensis4 coloured bill, Unzen city，22 Apr. 2015

Same individual upper photo：Black marking on P2，Unzen city，22 Apr. 2015

Steppe Gullbarabensis 2cy Apr.　P1-4 whitish whether, 5 greater coberts dark brown，Unzen city，14 Apr. 2017