Cape Verde Swift vs African Palm Swift
Apus alexandri 비교 대상 Cypsiurus parvus
Side-by-Side Comparison
| 속성 | Cape Verde Swift | African Palm Swift |
|---|---|---|
| 학명 | Apus alexandri | Cypsiurus parvus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 27.5 cm (10.8 in) | 27.2 cm (10.7 in) |
| 체중 | 39.4 g (1.39 oz) | 14.38 g (0.51 oz) |
| 식성 | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 산란 수 | 2 | 1-3 |
| 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.
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
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.
African Palm Swift
Found across sub-Saharan Africa from Senegal east to Somalia and south to South Africa. Common in open areas near palms; nests in palm leaves.
보전 상태
Cape Verde Swift
African Palm 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 …
African Palm Swift
Slender and long-tailed; uniformly pale greyish-brown overall; underparts paler grey-buff; long deeply forked tail; pale uniform appearance with no contrasting markings; widespread African palm-nesting swift with distinctive slender silhouette.
About These Birds
Cape Verde Swift
알렉산더 칼새는 카보베르데 제도에만 서식하는 소형 칼새입니다. 집 칼새와 유사하지만 유전적으로 구별되는 고유종으로, 섬 절벽과 건물에서 번식합니다.
African Palm Swift
길고 좁은 날개와 깊이 갈라진 꼬리를 가진 15–17 cm의 가는 칼새. 어두운 갈색 깃털. 사바나와 개방 삼림의 야자나무와 밀접하게 연관되어 사하라 이남 아프리카 전역에 분포. 공중 곤충식성. 아프리카에서 가장 풍부한 칼새 중 하나.