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gull billed tern

Gelochelidon nilotica

Last update: 22 Mar 2026

Gull Billed Tern 的基本信息

Scientific NameGelochelidon nilotica
Status LC 无危
Size33-38 cm (13-15 inch)
Colors
Grey
White
Type
Seabirds
type
FamilyGulls, Terns, Skimmers

简介

鸥嘴噪鸥Gelochelidon nilotica)是燕鸥科中一种独特且分布广泛的成员。与许多严格依赖海洋环境的近亲不同,该物种适应性极强,常在陆地和淡水沼泽上空捕食。它因其独特的形态和专门的觅食行为而引人注目。

外貌特征

鸥嘴噪鸥体长在 35-38 厘米 之间,是一种体格健壮的中型鸟类。它最显著的特征是其 粗壮、黑色、类似海鸥的喙。在繁殖季节,它头部呈纯黑色,上体呈淡灰色,下体呈纯白色。冬季时,黑色头顶会褪色,仅在眼后留下一块模糊的灰色斑块。它们的腿比大多数其他燕鸥种类更长且更黑。

栖息地

鸥嘴噪鸥栖息的环境非常广泛。它们常见于 盐沼、沿海泻湖和河口。然而,它们在内陆也同样自在,经常出没于大型湖泊、季节性沼泽,甚至是远离海岸的 农田 或草地。

饮食习性

与那些潜水捕鱼的典型燕鸥不同,鸥嘴噪鸥的食性非常多样化。它主要 食虫,在空中捕捉蜻蜓、蚱蜢和甲虫。它们也会捕食 青蛙、蜥蜴、小型哺乳动物 和甲壳类动物,直接从地面或水面将其叼起。

繁殖与筑巢

这些鸟类成群筑巢,通常与其他滨鸟或燕鸥混居。它们在地面上挖掘浅坑,通常选择在 沙滩、贝壳堆或干燥的泥滩上。典型的每窝产卵 2 到 3 枚,由双亲共同孵化,历时约 22-23 天。

行为习性

鸥嘴噪鸥的行为更让人联想到海鸥或鹰,而不是典型的燕鸥。它们飞行 优雅、平稳,同时在地面搜寻猎物。它们很少潜入水中,更喜欢在空中飞捕昆虫或俯冲下来从植被中抓取猎物。

保护现状 - LC 无危

虽然鸥嘴噪鸥在 IUCN 红色名录中被列为 无危 物种,但许多区域种群正在减少。主要威胁包括沿海开发导致的 栖息地丧失、筑巢地的人为干扰,以及杀虫剂对其昆虫猎物的影响。

趣闻轶事

  1. 鸥嘴噪鸥除南极洲外遍布各大洲,是分布最广的燕鸥种类之一。
  2. 尽管被称为“海鸟”,但它很少吃鱼,更偏爱陆生昆虫和脊椎动物。
  3. 它的名字源于其沉重的喙,看起来比其他燕鸥尖锐的喙更像海鸥的喙。
  4. 它们以跟随农用机械捕食犁地翻出的昆虫而闻名。

观鸟者提示

  • 耕地 或沼泽寻找它们,而不仅仅是在开阔的海面上寻找。
  • 聆听它们独特的叫声,那是一种粗糙、鼻音浓重的“kay-ti-did”声或“笑声”。
  • 观察它们的狩猎方式;如果你看到一种燕鸥类鸟在地面上捡食昆虫,那很可能就是鸥嘴噪鸥。
  • 检查其 尾部是否没有深叉,这有助于将它们与普通燕鸥或福氏燕鸥区分开来。

结论

鸥嘴噪鸥是鸟类适应性的一个迷人案例,它架起了沿海和陆地生态系统之间的桥梁。对于观鸟者和自然爱好者来说,发现这种独特的“陆地燕鸥”提供了一个绝佳的机会,去观察一种打破了人们对其家族典型期望的物种。

Gull Billed Tern 分布图与范围

Official Distribution Data provided by
BirdLife International and Handbook of the Birds of the World (2025)

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