Bates's Swift
Apus batesi
A small, entirely blackish swift with a slightly dusky throat and a deeply forked tail. Flies rapidly over lowland forest, occasionally gliding briefly. Most often found over lowland forests, where it nests in abandoned swallow nests such as those of Forest Swallow. In profile, similar to African Palm-Swift or Scarce Swift, but Bates’s Swift has wider wings and a bigger body, and is overall much darker.
识别特征
Bates's swift is a small, slender swift with a deeply forked tail which is often held closed to form a point. It has a glossy black plumage with an indistinct pale patch on the throat. It is normally silent but makes a high-pitched trill near the nest. They are 14 cm in length.
分类信息
Recent molecular studies have placed this species in a clade with white-rumped swift, horus swift, house swift and little swift.<p>Its common name and Latin binomial commemorate George Latimer Bates (1863–1940), an American naturalist who traveled in West Africa.
- 学名
- Apus batesi
- 命名信息
- (Sharpe, 1904)
- 目
- Apodiformes
- 科
- Apodidae
- 属
- Apus
分布与栖息地
Bates's swift is found from Liberia and Guinea then patchily eastwards to Ghana, Nigeria and Cameroon, south to Gabon and the northern Congo. Its presence in Sierra Leone is unconfirmed, as are reports from the eastern democratic Republic of Congo. Bates's swift is a rainforest species and is found in areas close to cliffs and crags.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
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