Ridgetop Swiftlet vs White-chested Swift
Collocalia isonota 对比 Cypseloides lemosi
Side-by-Side Comparison
| 属性 | Ridgetop Swiftlet | White-chested Swift |
|---|---|---|
| 学名 | Collocalia isonota | Cypseloides lemosi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Not Evaluated | Least Concern |
| 体长 | — | — |
| 翼展 | — | 30.0 cm (11.8 in) |
| 体重 | 6.483333333333333 g (0.23 oz) | 28.400000000000002 g (1.00 oz) |
| 食性 | -- | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 产卵数 | -- | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ridgetop Swiftlet
Thin, high twittering; soft 'chip-chip' over Solomon Islands ridges; echolocation clicks in caves; one of smallest swiftlets; calls barely audible; rapid chittering in flight
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
Ridgetop Swiftlet
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
Ridgetop Swiftlet
White-chested Swift
How to Tell Them Apart
Ridgetop Swiftlet
Tiny swiftlet; glossy dark blue-green upperparts; pale buff rump band; dark sooty-brown underparts; slightly forked tail; recently described Philippine endemic; differs from congeners primarily in voice and ridge-top ridge habitat.
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
Ridgetop Swiftlet
山脊金丝燕(Collocalia isonota)是一种体长9-10厘米的小型金丝燕，分布于菲律宾和小巽他群岛的山地地区。深色有光泽羽毛。空中捕食昆虫，在山地地形中筑巢。
White-chested Swift
哥伦比亚雨燕限于哥伦比亚南部，是罕见的雨燕。