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北雀鷹 Nothern Sparrowhawk | by Hiyashi Haka
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北雀鷹 Nothern Sparrowhawk

學名: Accipiter nisus

英名: Nothern Sparrowhawk

Family : Accipitridae (鷲鷹科). Length: 33 cm (♂), 39cm (♀).

北雀鷹是鷹科鷹屬的小型猛禽,體長33-39cm。雌較雄略大,翅闊而圓,尾較長。雄鳥上體暗灰色,雌鳥灰褐色,頭後雜有少許白色。下體白色或淡灰白色,雄鳥具細密的紅褐色橫斑,雌鳥具褐色橫斑。飛翔時翼後緣略為突出,通常快速鼓動兩翅飛一陣後接著又滑翔一會。主要為留鳥,少數遷徙。棲息於茂密的針葉林和常綠闊葉林以及開闊的林緣疏林地帶,冬季下常到山腳和平原地帶的小塊叢林、竹園與河谷地帶。主要以雀形目小鳥、昆蟲和鼠類為食。

幼鳥頭頂至後頸栗褐色,枕和後頸羽基灰白色,背至尾上覆羽暗褐色,各羽均具赤褐色羽緣,翅和尾似雌鳥。喉黃白色,具黑褐色羽乾紋,胸具斑點狀縱紋,胸以下具黃褐色或褐色橫斑。其餘似成鳥。虹膜橙黃色,嘴暗鉛灰色、尖端黑色、基部黃綠色,蠟膜黃色或黃綠色,腳和趾橙黃色,爪黑色。

The Eurasian (or Northern) Sparrowhawk (Accipiter nisus) is a small bird of prey in the family Accipitridae. Adult male Eurasian Sparrowhawks have bluish grey upperparts and orange-barred underparts; females and juveniles are brown above with brown barring below. The female is up to 25% larger than the male – one of the largest differences between the sexes in any bird species. The Eurasian Sparrowhawk can be found in any habitat and often hunts garden birds in towns and cities. Males tend to take smaller birds, including tits, finches, and sparrows.

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Uploaded on November 13, 2014