Lesser Black-backed Gull
CommonGBIF 1.8·Dongniao Rarity Index4.67
小黑背鸥 （英文名：Lesser Black-backed Gull，学名：Larus fuscus），是鸻形目鸥科鸥属的鸟类。繁殖于欧洲大西洋沿岸，冬季迁徙至英国至西非，近年来在北美东海岸数量显著增加，成为全年可见的物种。英国是其欧洲种群的40%所在地，关键繁殖地不足十处。
Lesser Black-backed Gull
52-67 cm; span 1.35-1.55 m. Similar to Kelp Gull but longer winged; legs of adults always bright yellow; smaller, more rounded head; thinner bill without projecting hook at tip, vermillion patch on angle of lower mandible. Slaty-black upperwings and back but variable according to race and degree of feather wear - can develop brownish tone; white tips to flight feathers and white 'mirror' on outer primary are greatly reduced in worn plumage. Non-breeding birds may develop grey-buff streaks over face, crown and neck.
- Similar Species
- Kelp Gull.
- Habitat
- most coastal environments, also inland waters, refuse tips, parks.
- Range & Status
- breeds n. and w. Europe, Britain, Iceland. In Non-breeding period widespread in ne. Atlantic Ocean s. to Gulf of Guinea, Mediterranean and across Persian Gulf to India. Vagrant to Australia: recorded from Cocos (Keeling) Islands 1959, Broome (WA) Jan. 2013.
