Pacific Swift vs White-chested Swift
Apus pacificus 비교 대상 Cypseloides lemosi
Side-by-Side Comparison
| 속성 | Pacific Swift | White-chested Swift |
|---|---|---|
| 학명 | Apus pacificus | Cypseloides lemosi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.6 cm (13.6 in) | 30.0 cm (11.8 in) |
| 체중 | 41.516666666666666 g (1.46 oz) | 28.400000000000002 g (1.00 oz) |
| 식성 | Feeds aerially on tiny insects and spiders, often following weather fronts where aerial plankton concentrates. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 산란 수 | 1-3 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pacific Swift
Thin, reedy trill with nasal overtone; soft chattering notes delivered continuously during rapid low-level flight over fields.
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
Pacific Swift
Breeds from Siberia and Japan south to China and the Himalayas. Long-distance migrant wintering in Southeast Asia and Australia.
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
Pacific Swift
White-chested Swift
How to Tell Them Apart
Pacific Swift
Dark blackish-brown upperparts; distinctive white rump patch contrasting with dark back; white throat patch; underparts dark with pale brown barring; deeply forked tail; white rump distinguishes it from Common Swift …
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
Pacific Swift
태평양 칼새는 동아시아와 오스트레일리아 사이를 이주하는 칼새입니다. 흰 허리 패치와 긴 꼬리가 특징이며, 큰 무리를 이루어 이주하며 공중에서 곤충을 잡습니다.
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.