Costa Rican Swift vs White-chested Swift
Chaetura fumosa 对比 Cypseloides lemosi
Side-by-Side Comparison
| 属性 | Costa Rican Swift | White-chested Swift |
|---|---|---|
| 学名 | Chaetura fumosa | Cypseloides lemosi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 21.2 cm (8.3 in) | 30.0 cm (11.8 in) |
| 体重 | 18.2 g (0.64 oz) | 28.400000000000002 g (1.00 oz) |
| 食性 | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … | 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
Costa Rican Swift
Thin, insect-like buzz alternating with soft clicks; delicate high trill delivered during swift wheeling flight over valleys.
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
Costa Rican Swift
Found along the Pacific slope of Costa Rica and Panama. Resident in lowland and foothill forest and forest edge below 1,000 m.
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
Costa Rican Swift
White-chested Swift
How to Tell Them Apart
Costa Rican Swift
Small; uniformly dark sooty-brown with rump barely paler than dark back; underparts dark grey-brown; short spiny tail; Central American Pacific slope species; exceptionally dark and uniform compared to most Chaetura …
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
Costa Rican Swift
烟色雨燕 (Chaetura fumosa)，体长约11厘米。体羽均匀的烟褐色，腰部略浅，尾短具细刺。分布于哥斯达黎加太平洋沿岸及巴拿马。栖息于低地热带雨林上空。以飞行昆虫为食。
White-chested Swift
哥伦比亚雨燕限于哥伦比亚南部，是罕见的雨燕。