Dark-rumped Swift vs White-chested Swift
Apus acuticauda 비교 대상 Cypseloides lemosi
Side-by-Side Comparison
| 속성 | Dark-rumped Swift | White-chested Swift |
|---|---|---|
| 학명 | Apus acuticauda | Cypseloides lemosi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.8 cm (13.7 in) | 30.0 cm (11.8 in) |
| 체중 | 37.43 g (1.32 oz) | 28.400000000000002 g (1.00 oz) |
| 식성 | Aerial insectivore feeding on swarms of small flies, winged ants, and tiny beetles during sustained … | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 산란 수 | 2-4 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Dark-rumped Swift
Thin, high twittering with silvery sheen; rapid sequence of light notes with gentle tremolo quality at dawn and dusk.
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
Dark-rumped Swift
Found in northeastern India (Assam) and adjacent Myanmar. Rare and poorly known; found in forested hills and river valleys at moderate elevation.
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.
보전 상태
Dark-rumped Swift
White-chested Swift
How to Tell Them Apart
Dark-rumped Swift
Dark sooty-brown throughout with dark rump concolorous with back; no contrasting white rump patch; pale white throat; underparts dark brown; Himalayan endemic cliff-nester; dark rump contrasting with white-rumped relatives is …
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
Dark-rumped Swift
날카로운 꼬리 칼새는 인도 북동부와 미얀마, 방글라데시에 서식하는 희귀한 칼새입니다. V자 형태로 갈라진 꼬리와 전체적으로 어두운 깃털이 특징이며, 산악 지형에서 서식합니다.
White-chested Swift
14–15 cm의 중형 칼새로 콜롬비아 카우카 상부 계곡 고유종. 흰 가슴 반점이 있는 그을린 흑색 깃털. 아열대림의 공중 곤충식성. 극도로 제한된 분포와 지속적인 서식지 손실로 위기종으로 분류.