燕鸥科|燕鸥属
学名:Sterna hirundo
英名:Common Tern
形态:中型水鸟,体长31-38cm。翅较长、窄而尖,外侧尾羽极度延长,尾呈深叉状。繁殖期整个头顶黑色,胸灰色。非繁殖期上翼及背灰色,尾上覆羽、腰及尾白色,额白,头顶具黑色及白色杂斑,颈背最黑,下体白。第一冬鸟上体褐色浓重,上背具鳞状斑。
虹膜褐色;嘴冬季黑色,夏季嘴基红色;脚偏红色。
分布:中国大部分省份有分布。在保护区属常见的旅鸟。
习性:栖居于平原、草地、湖泊的沼泽地带,也出现于河口、海岸和沿海沼泽地带。飞行有力,从高处冲下水面取食。主要以小鱼、虾、软体动物等为食。
ID: Medium-sized water bird.Body length 31-38cm.Wings long, narrow and pointed.Tail deeply forked with long streamers.Adult breeding has cap black and grey breast.Non-breeding adult upperwing and mantle grey, uppertail, rump and tail white.Forehead white, cap streaked black, and nape black.Underbody white.1 st-winter browner above, mantle scaled.
BP: Eyes brown; bill black, when breeding base red; tarsi reddish.
SD: Common migrant.
HH: Frequents plains, meadows, marshy lakes, and estuaries, coasts sand nearby marshes.Flight powerful, plunge-dives from quite centain height.Feeds mainly on fish, prawns and molluscs.
普通燕鸥
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