White-chested Swift vs Great Dusky Swift
Cypseloides lemosi 比較対象 Cypseloides senex
Side-by-Side Comparison
| 属性 | White-chested Swift | Great Dusky Swift |
|---|---|---|
| 学名 | Cypseloides lemosi | Cypseloides senex |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 30.0 cm (11.8 in) | 33.8 cm (13.3 in) |
| 体重 | 28.400000000000002 g (1.00 oz) | 83.0 g (2.93 oz) |
| 食性 | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … |
| 一腹卵数 | -- | 1-2 |
| 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
Great Dusky Swift
Loud, churring trill; harsher and louder than other Cypseloides; calls over Iguacu Falls and major Neotropical waterfalls; buzzy 'bzzzt-bzzzt' in aerial groups
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.
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
保全状況
White-chested Swift
Great Dusky 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 …
Great Dusky Swift
Very large; entirely dark sooty-brown with pale grey forehead and chin scaling; slightly paler underparts; broad wings; largest Cypseloides swift; South American waterfall specialist with dusky uniform plumage and imposing …
About These Birds
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。
Great Dusky Swift
グレートダスキースウィフトはブラジルとアルゼンチンに分布し、大きな滝の周辺で繁殖するアマツバメである。