Pale-rumped Swift vs White-chested Swift
Chaetura egregia 比較対象 Cypseloides lemosi
Side-by-Side Comparison
| 属性 | Pale-rumped Swift | White-chested Swift |
|---|---|---|
| 学名 | Chaetura egregia | Cypseloides lemosi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 23.4 cm (9.2 in) | 30.0 cm (11.8 in) |
| 体重 | 23.68 g (0.84 oz) | 28.400000000000002 g (1.00 oz) |
| 食性 | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 一腹卵数 | -- | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pale-rumped Swift
Breathy, rippling chatter with airy quality; light twittering notes loosely strung together in relaxed arrhythmic sequences.
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
Pale-rumped Swift
Found in the western Amazon basin from eastern Peru and Bolivia east to central Brazil. Resident in lowland tropical forest near rivers.
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.
保全状況
Pale-rumped Swift
White-chested Swift
How to Tell Them Apart
Pale-rumped Swift
Small; dark sooty-brown upperparts; distinctively very pale whitish rump strongly contrasting with dark back; underparts dark grey-brown; short spiny tail; Amazonian species with one of the most striking white rumps …
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
Pale-rumped Swift
コロンビアからペルー・ブラジル西部の湿潤低地林に生息する小型アマツバメ（11〜12 cm）。顕著な淡い腰帯を持つ暗い羽衣。棘状の尾。空中で昆虫を捕食。
White-chested Swift
コロンビアアマツバメはコロンビア南部に限定的に生息する希少なアマツバメである。