Blyth's Swift vs White-chested Swift
Apus leuconyx 비교 대상 Cypseloides lemosi
Side-by-Side Comparison
| 속성 | Blyth's Swift | White-chested Swift |
|---|---|---|
| 학명 | Apus leuconyx | Cypseloides lemosi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Not Evaluated | Least Concern |
| 체장 | — | — |
| 날개 폭 | — | 30.0 cm (11.8 in) |
| 체중 | 42.949999999999996 g (1.52 oz) | 28.400000000000002 g (1.00 oz) |
| 식성 | Obligate aerial insectivore; takes small flies, beetles, and aerial spiders in swooping fast-flight passes. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 산란 수 | 2-3 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Blyth's Swift
Loud, piercing screech with shrill metallic quality; powerful prolonged calls audible from considerable distances in open sky.
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
Blyth's Swift
Found from Central Asia and the Himalayas east to China and southeastern Russia. Migratory; winters in South and Southeast Asia.
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
Blyth's Swift
White-chested Swift
How to Tell Them Apart
Blyth's Swift
Dark blackish-brown upperparts; white rump patch; white throat; underparts dark brown; deeply forked tail; recently described species closely related to Pacific Swift; separation based on molecular and biometric characters.
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
Blyth's Swift
흰 발톱 칼새는 아시아 중부의 고산 지대에 서식합니다. 히말라야와 중앙아시아 산맥에서 번식하며, 암벽과 절벽에 집을 짓습니다.
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.