Polynesian Swiftlet vs White-chested Swift
Aerodramus leucophaeus 비교 대상 Cypseloides lemosi
Side-by-Side Comparison
| 속성 | Polynesian Swiftlet | White-chested Swift |
|---|---|---|
| 학명 | Aerodramus leucophaeus | Cypseloides lemosi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 23.7 cm (9.3 in) | 30.0 cm (11.8 in) |
| 체중 | 13.4 g (0.47 oz) | 28.400000000000002 g (1.00 oz) |
| 식성 | Aerial insectivore catching tiny flying insects, midges, and airborne spiders in fast low-altitude flight near … | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 산란 수 | 2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Polynesian Swiftlet
High twittering; thin 'chip-chip' over French Polynesian islands; echolocation clicks in cave roosts; light-colored underparts distinguish it visually; calls unremarkable
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
Polynesian Swiftlet
Found across French Polynesia including the Society Islands, Marquesas, and Tuamotu. Resident in forest and open areas; nests in sea caves.
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
Polynesian Swiftlet
White-chested Swift
How to Tell Them Apart
Polynesian Swiftlet
Small; dark brown-grey upperparts with minimal gloss; pale grey rump band; underparts whitish-grey; forked tail; East Polynesian endemic from Society Islands; slightly more uniformly dark than some Pacific congeners.
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
Polynesian Swiftlet
소사이어티 제도, 마르케사스 제도, 오스트랄 제도 등 프랑스령 폴리네시아 전역에 서식하는 작은 칼새류(10~11cm). 어두운 깃털. 공중 식충성이다.
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.