Cape Verde Swift vs White-chested Swift
Apus alexandri 비교 대상 Cypseloides lemosi
Side-by-Side Comparison
| 속성 | Cape Verde Swift | White-chested Swift |
|---|---|---|
| 학명 | Apus alexandri | Cypseloides lemosi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 27.5 cm (10.8 in) | 30.0 cm (11.8 in) |
| 체중 | 39.4 g (1.39 oz) | 28.400000000000002 g (1.00 oz) |
| 식성 | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. | 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
Cape Verde Swift
Soft, musical whistling with smooth melodic quality; clear, unhurried phrases rising and falling gently in warm afternoon air.
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
Cape Verde Swift
Endemic to the Cape Verde Islands in the eastern Atlantic. Resident on several islands including São Vicente and Santo Antão.
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
Cape Verde Swift
White-chested Swift
How to Tell Them Apart
Cape Verde Swift
Dark sooty-brown overall; pale grey-white throat patch; underparts slightly paler brown; moderately forked tail; Cape Verde Islands endemic; similar to Common Swift but slightly smaller with more extensive pale throat …
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
Cape Verde Swift
알렉산더 칼새는 카보베르데 제도에만 서식하는 소형 칼새입니다. 집 칼새와 유사하지만 유전적으로 구별되는 고유종으로, 섬 절벽과 건물에서 번식합니다.
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.