Bates's Swift vs African Palm Swift
Apus batesi 비교 대상 Cypsiurus parvus
Side-by-Side Comparison
| 속성 | Bates's Swift | African Palm Swift |
|---|---|---|
| 학명 | Apus batesi | Cypsiurus parvus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 24.6 cm (9.7 in) | 27.2 cm (10.7 in) |
| 체중 | 22.1 g (0.78 oz) | 14.38 g (0.51 oz) |
| 식성 | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … | 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
Bates's Swift
Rapid, light twittering with bright crystalline quality; cascading series of high pure notes tumbling freely in open 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
Bates's Swift
Found in a restricted range in West and Central Africa from Cameroon and Gabon. Resident in lowland rainforest. Rare and poorly known.
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
Bates's Swift
African Palm Swift
How to Tell Them Apart
Bates's Swift
Small; dark sooty-brown overall; narrow pale greyish-white rump band; pale greyish chin; underparts dark brown; forked tail; West African forest species; the narrowest and dullest rump band among African white-rumped …
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
Bates's Swift
베이츠 칼새는 중앙아프리카와 서아프리카의 적도 우림 지역에 서식하는 칼새입니다. 흰 가슴과 이마가 특징이며, 다른 칼새보다 더 낮게 날며 먹이를 잡습니다.
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.