White-rumped Swift vs White-chested Swift
Apus caffer 对比 Cypseloides lemosi
Side-by-Side Comparison
| 属性 | White-rumped Swift | White-chested Swift |
|---|---|---|
| 学名 | Apus caffer | Cypseloides lemosi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 29.0 cm (11.4 in) | 30.0 cm (11.8 in) |
| 体重 | 23.0 g (0.81 oz) | 28.400000000000002 g (1.00 oz) |
| 食性 | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 产卵数 | 1-3 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-rumped Swift
Deep, guttural churring with resonant buzzing quality; prolonged low-frequency trill vibrating persistently through dense foliage.
White-chested Swift
High, thin twittering; soft 'tsit' calls in flight; calls over Colombian waterfalls; very poorly known; thin, reedy contact notes; one of most rarely documented swifts
Geographic Range & Migration
White-rumped Swift
Breeds in southern Europe and North Africa east to Central Asia. Migratory; winters in sub-Saharan Africa from Senegal south to South Africa.
White-chested Swift
Known from Colombia and adjacent Ecuador. One of the world's rarest swifts; recorded at waterfalls in humid forest foothills at 500–1,200 m.
保护状况
White-rumped Swift
White-chested Swift
How to Tell Them Apart
White-rumped Swift
Dark sooty-brown; narrow elongated white rump patch; white throat; underparts dark; forked tail; African species; narrower and more elongated white rump than Little Swift; deeply forked tail unlike the square …
White-chested Swift
Black upperparts and wings; distinctive large white chest patch contrasting sharply with black throat and belly; white confined to central breast; Colombian endemic with unique bold bicoloured plumage unlike any …
About These Birds
White-rumped Swift
白腰雨燕广泛分布于撒哈拉以南非洲，以白色腰部为特征的中型雨燕。
White-chested Swift
哥伦比亚雨燕限于哥伦比亚南部，是罕见的雨燕。