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灰瓣蹼鷸  Grey Phalarope | by Hiyashi Haka
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灰瓣蹼鷸 Grey Phalarope

學名: Phalaropus fulicarius

英名: Grey Phalarope

Family : Phalaropodidae (瓣蹼鷸科). Length: 20-21cm.

體小而嘴直的灰色涉禽。非常似紅頸瓣蹼鷸但前額較白,上體色淺而單調,嘴色較深且寬,有時嘴基黃色。在手上看腳蹼為黃色。主要棲息在靠近北冰洋海岸的苔原沼澤地帶,特別是湖泊、水塘和溪流附近的苔原沼澤。善游泳,除繁殖期外,幾乎成天游弋在海洋洋面上常單獨或成小群活動和覓食。偶爾也集成上千隻的大群。主要以水生昆蟲、甲殼類、軟體動物和浮游生物為食。

在中國大陸,分布於新疆、黑龍江、天津、上海等地。該物種的模式產地在加拿大。

Grey phalarope breeds in western North America and migrates to South America, with lobed toes and a straight, slender bill. The red phalarope (Phalaropus fulicarius) is an unusual wading bird, not just because it spends up to 11 months of the year far out at sea, but also because the female is larger than the male and displays more flamboyant colouration during the breeding season. During this time the female has large white cheek patches, a black crown that extends past the black-tipped, yellow bill, and a chestnut red neck and chestnut underparts. The wing uppersides are black, although the buff edges of each feather give a streaked appearance, and the legs are pale blue.

When feeding, a phalarope will often swim in a small, rapid circle, forming a small whirlpool. This behavior is thought to aid feeding by raising food from the bottom of shallow water. The bird will reach into the center of the vortex with its bill, plucking small insects or crustaceans caught up therein.

 

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Uploaded on March 19, 2016