White-chested Swift vs Pygmy Palm Swift
Cypseloides lemosi 对比 Tachornis furcata
Side-by-Side Comparison
| 属性 | White-chested Swift | Pygmy Palm Swift |
|---|---|---|
| 学名 | Cypseloides lemosi | Tachornis furcata |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 30.0 cm (11.8 in) | 17.8 cm (7.0 in) |
| 体重 | 28.400000000000002 g (1.00 oz) | 6.75 g (0.24 oz) |
| 食性 | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. | Aerial-only diet of small flying insects, winged termites, and drifting spiders caught during continuous flight. |
| 产卵数 | -- | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Pygmy Palm Swift
Tiny, buzzy chips barely audible beyond two metres; minute high-pitched twittering almost disappearing in ambient sound.
Geographic Range & Migration
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.
Pygmy Palm Swift
Found in Venezuela and adjacent Colombia and Guyana. Resident in lowland savanna near Moriche palms; nests inside palm fronds. Uncommon.
保护状况
White-chested Swift
Pygmy Palm Swift
How to Tell Them Apart
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 …
Pygmy Palm Swift
Tiny, among the world's smallest swifts; dark brown-black overall; pale buff-white rump patch; underparts pale whitish with dark sides; deeply forked tail; Venezuelan and Colombian palm-nesting species; minute size and …
About These Birds
White-chested Swift
哥伦比亚雨燕限于哥伦比亚南部，是罕见的雨燕。
Pygmy Palm Swift
A tiny swift (9-10 cm) of open savannas and palm groves in Colombia and Venezuela. Dark plumage with a pale rump. Long, forked tail. Aerial insectivore associated with Moriche palms (Mauritia flexuosa), nesting inside palm fronds. One of the smallest swifts.