Southern Swift vs White-chested Swift
Chaetura meridionalis 比較対象 Cypseloides lemosi
Side-by-Side Comparison
| 属性 | Southern Swift | White-chested Swift |
|---|---|---|
| 学名 | Chaetura meridionalis | Cypseloides lemosi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 26.3 cm (10.4 in) | 30.0 cm (11.8 in) |
| 体重 | 19.8 g (0.70 oz) | 28.400000000000002 g (1.00 oz) |
| 食性 | Completely aerial diet of small flying insects and spiders; never forages on the ground or … | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 一腹卵数 | 3-5 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Southern Swift
Faint, thin squealing trill; rapid metallic chips cascading high-pitched over coastal forest, almost ventriloquial in quality.
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
Southern Swift
Found in southern South America from Brazil to Argentina. Migratory, moving north to Amazonia during the austral winter. Open areas and forest.
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
Southern Swift
White-chested Swift
How to Tell Them Apart
Southern Swift
Small; dark sooty-brown overall; pale grey rump band moderately contrasting with dark back; underparts dark grey-brown; short spiny tail; southern South American migratory species; closely resembles Ashy-tailed Swift but rump …
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
Southern Swift
ブラジルからアルゼンチンの南アメリカ南東部に生息する小型アマツバメ（11〜12 cm）。暗い灰褐色の羽衣。棘状の尾。空中昆虫食性。南部で繁殖し北部へ移動する長距離渡り鳥。
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。