Ashy-tailed Swift vs Chestnut-collared Swift
Chaetura andrei 对比 Streptoprocne rutila
Side-by-Side Comparison
| 属性 | Ashy-tailed Swift | Chestnut-collared Swift |
|---|---|---|
| 学名 | Chaetura andrei | Streptoprocne rutila |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 22.3 cm (8.8 in) | 26.0 cm (10.2 in) |
| 体重 | 17.1 g (0.60 oz) | 21.8 g (0.77 oz) |
| 食性 | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| 产卵数 | -- | 2 |
| 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.
Chestnut-collared Swift
High, screaming trill; rapid 'scree-scree' in flight; shrill and penetrating; calls over Neotropical mountains and canyon edges; alarm a rapid screeching chatter
Geographic Range & Migration
Ashy-tailed Swift
Found in eastern Brazil, Bolivia, Paraguay, and northern Argentina. Partially migratory; moves north in austral winter. Lowland forest.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
保护状况
Ashy-tailed Swift
Chestnut-collared 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 …
Chestnut-collared Swift
Dark blackish-brown body with diagnostic rich chestnut collar encircling entire neck; collar bold and complete; underparts slightly paler brown; small swift with striking warm-toned neck band contrasting vividly with dark …
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。
Chestnut-collared Swift
栗领雨燕栖息于中美洲和南美洲北部的山地。