Asian Palm Swift vs African Palm Swift
Cypsiurus balasiensis 비교 대상 Cypsiurus parvus
Side-by-Side Comparison
| 속성 | Asian Palm Swift | African Palm Swift |
|---|---|---|
| 학명 | Cypsiurus balasiensis | Cypsiurus parvus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 22.9 cm (9.0 in) | 27.2 cm (10.7 in) |
| 체중 | 8.833333333333334 g (0.31 oz) | 14.38 g (0.51 oz) |
| 식성 | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 산란 수 | 1-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Asian Palm Swift
High, wavering whistle with slightly nasal quality; gently pulsed notes trembling upward, characteristic of evening flight calls.
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Asian Palm Swift
Found from India and Sri Lanka east through Southeast Asia to the Philippines and Indonesia. Common resident in open areas near palms.
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
Asian Palm Swift
African Palm Swift
How to Tell Them Apart
Asian Palm Swift
Very slender; pale greyish-brown overall; paler below; extremely long deeply forked tail; tiny for a swift; South and Southeast Asian palm-nesting species; uniform pale brownish-grey coloration similar to African relative …
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
Asian Palm Swift
13 cm의 가는 칼새로 인도에서 필리핀·인도네시아까지 남아시아·동남아시아에 널리 분포. 깊이 갈라진 꼬리를 가진 어두운 갈색 깃털. 야자나무와 밀접하게 연관되어 야자잎 아래에 둥지를 튼다. 열대 저지에서 흔하다.
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.