Ashy-tailed Swift vs African Palm Swift
Chaetura andrei 对比 Cypsiurus parvus
Side-by-Side Comparison
| 属性 | Ashy-tailed Swift | African Palm Swift |
|---|---|---|
| 学名 | Chaetura andrei | Cypsiurus parvus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 22.3 cm (8.8 in) | 27.2 cm (10.7 in) |
| 体重 | 17.1 g (0.60 oz) | 14.38 g (0.51 oz) |
| 食性 | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 产卵数 | -- | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ashy-tailed Swift
Dry rattling chatter with sharp staccato onset; brief bursts of clicking notes followed by descending hissing sound.
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Ashy-tailed Swift
Found in eastern Brazil, Bolivia, Paraguay, and northern Argentina. Partially migratory; moves north in austral winter. Lowland forest.
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.
保护状况
Ashy-tailed Swift
African Palm Swift
How to Tell Them Apart
Ashy-tailed Swift
Small; dark sooty-brown overall; distinctly pale ashy-grey rump and tail contrasting with dark body; underparts dark grey-brown; ashy rump and tail the defining feature separating it from other South American …
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
Ashy-tailed Swift
安氏雨燕 (Chaetura andrei)，体长约12厘米。体羽深褐黑色，腰部较淡，尾短呈方形，末端细刺明显。分布于南美洲北部，包括委内瑞拉、圭亚那和巴西北部。在城镇建筑物和空心树中营巢。以飞行昆虫为食。
African Palm Swift
A slender swift (15-17 cm) with long, narrow wings and a deeply forked tail. Dark brown plumage. Found across sub-Saharan Africa in savanna and open woodland, closely associated with palm trees. Aerial insectivore. One of Africa's most abundant swift species.