Cape Verde Swift vs Alpine Swift
Apus alexandri 비교 대상 Tachymarptis melba
Side-by-Side Comparison
| 속성 | Cape Verde Swift | Alpine Swift |
|---|---|---|
| 학명 | Apus alexandri | Tachymarptis melba |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 27.5 cm (10.8 in) | 43.9 cm (17.3 in) |
| 체중 | 39.4 g (1.39 oz) | 97.5 g (3.44 oz) |
| 식성 | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 산란 수 | 2 | 1-4 |
| Population Trend | — | — |
Song & Call Comparison
Cape Verde Swift
Soft, musical whistling with smooth melodic quality; clear, unhurried phrases rising and falling gently in warm afternoon air.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
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.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
보전 상태
Cape Verde Swift
Alpine 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 …
Alpine Swift
Large; dark brown upperparts; white throat patch separated from white belly by dark brown breast band; brown flanks; bold tricoloured underpart pattern; one of Europe's largest swifts with distinctive white …
About These Birds
Cape Verde Swift
알렉산더 칼새는 카보베르데 제도에만 서식하는 소형 칼새입니다. 집 칼새와 유사하지만 유전적으로 구별되는 고유종으로, 섬 절벽과 건물에서 번식합니다.
Alpine Swift
A large swift (20-22 cm, wingspan 54-60 cm) with a white belly and throat contrasting with dark brown upperparts. Found from southern Europe and Africa to Central Asia. Aerial insectivore, foraging at great heights. Nests on cliff faces in large colonies. Powerful, fast flier.