Dark-rumped Swift vs African Palm Swift
Apus acuticauda 비교 대상 Cypsiurus parvus
Side-by-Side Comparison
| 속성 | Dark-rumped Swift | African Palm Swift |
|---|---|---|
| 학명 | Apus acuticauda | Cypsiurus parvus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.8 cm (13.7 in) | 27.2 cm (10.7 in) |
| 체중 | 37.43 g (1.32 oz) | 14.38 g (0.51 oz) |
| 식성 | Aerial insectivore feeding on swarms of small flies, winged ants, and tiny beetles during sustained … | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 산란 수 | 2-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Dark-rumped Swift
Thin, high twittering with silvery sheen; rapid sequence of light notes with gentle tremolo quality at dawn and dusk.
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Dark-rumped Swift
Found in northeastern India (Assam) and adjacent Myanmar. Rare and poorly known; found in forested hills and river valleys at moderate elevation.
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
Dark-rumped Swift
African Palm Swift
How to Tell Them Apart
Dark-rumped Swift
Dark sooty-brown throughout with dark rump concolorous with back; no contrasting white rump patch; pale white throat; underparts dark brown; Himalayan endemic cliff-nester; dark rump contrasting with white-rumped relatives is …
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
Dark-rumped Swift
날카로운 꼬리 칼새는 인도 북동부와 미얀마, 방글라데시에 서식하는 희귀한 칼새입니다. V자 형태로 갈라진 꼬리와 전체적으로 어두운 깃털이 특징이며, 산악 지형에서 서식합니다.
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.