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距翅雁

距翅雁
乔贝国家公园的距翅雁
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 鸟纲 Aves
目: 雁形目 Anseriformes
科: 鴨科 Anatidae
亚科: 麻鸭亚科 Tadorninae
属: 距翅雁属 Plectropterus
Stephens, 1824
种:
距翅雁 P. gambensis
二名法
Plectropterus gambensis
(Linnaeus, 1766)
亞種

P. g. gambensis (Linnaeus, 1766)
P. g. niger (Sclater, 1877)

距翅雁的分布范围
  留鸟
異名

Anas gambensis Linnaeus, 1766

距翅雁Plectropterus gambensis),又名直翅鵝,是一種分佈在撒哈拉以南非洲濕地鴨科

特徵

[编辑]

距翅雁長75-115厘米,平均重4-6.8公斤,有時可以達10公斤,雄鳥較雌鳥大。[2][3]牠們是非洲最大的水鳥,也是世界上平均最大的。牠們主要是黑色,面部白色,翼上有很大的白色斑紋。其指名亞種P. g. gambensis腹部及兩側有很大片白色,而另一個在贊比西河的亞種P. g. niger,腹部只有小片的白色。

雄鳥不單較雌鳥大,面上也有較大片的紅色,上頜的基底有一個瘤。

距翅雁的翼上有距,其用途不明。

生態

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距翅雁會在水邊的叢林中築巢,有時也會利用樹孔、其他洞穴及鎚頭鸛的巢。牠們是很寂靜的鳥類,只會在飛行發出輕哨聲。

距翅雁的數量豐富,且是群居的。牠們會在地上覓食,日間主要會在水邊休息。

保育

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距翅雁是《非洲-歐亞大陸遷徙水鳥保護協定》所保護的物種之一。

参见

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參考资料

[编辑]
  1. ^ BirdLife International. Plectropterus gambensis. The IUCN Red List of Threatened Species. 2012 [26 November 2013]. 
  2. ^ World Association of Zoos and Aquariums. Spur-winged Goose. 2008 [2009-04-17]. [永久失效連結]
  3. ^ CSU Libraries. Spur-winged goose sitting in water. [2009-04-17]. (原始内容存档于2012-02-11). 
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距翅雁
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