Slaty-backed Gull
UncommonGBIF 27.2·Dongniao Rarity Index8.50
英文名：Slaty-backed Gull（学名：Larus schistisagus），是鸻形目鸥科鸥属的鸟类。大型鸥类，以其深灰色的背部、白色的头部、亮粉色的腿以及独特的‘新月’形状白色三级飞羽边缘著称。分布于欧亚东北部海岸线和湖泊，尤其在西伯利亚东北部南部至日本北海道和本州北部。繁殖季节结束后广泛游荡。
Slaty-backed Gull
64cm. A typical large gull, reminiscent of Kelp Gull but with pink legs and slaty grey back. Head white in br. plumage, streaked pale brown with darker eyepatch in non-br. plumage. Eye is pale and bill yellow with red spot near tip. Juvenile birds are heavily marked with pale brown on white, legs pink and bill dark. Breeds along the coast of ne Siberia to Alaska, migrating south to Japan and China.
Vagrant Widely recorded as a vagrant. An immature bird reported from Cooktown QLD, from 14th February to 4th April 2008. Ref. BARC.
