Ross's Gull Rhodostethia rosea
ヒメクビワカモメ

 
(1)Juv./1st winter  幼羽/第１回冬羽
(2)Juv./1st winter  幼羽/第１回冬羽
(3)Juv./1st winter  幼羽/第１回冬羽
(4)Juv./1st winter  幼羽/第１回冬羽
(5)1st winter  第１回冬羽
(6)adult winter/1st winter  成鳥冬羽・第１回冬羽
(7)adult winter/1st winter 成鳥冬羽・第１回冬羽
(8)adult winter  成鳥冬羽

*(1),(2),(3),(4)are the same individual


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