Plain Swift vs Chestnut-collared Swift
Apus unicolor 对比 Streptoprocne rutila
Side-by-Side Comparison
| 属性 | Plain Swift | Chestnut-collared Swift |
|---|---|---|
| 学名 | Apus unicolor | Streptoprocne rutila |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 29.9 cm (11.8 in) | 26.0 cm (10.2 in) |
| 体重 | 24.2 g (0.85 oz) | 21.8 g (0.77 oz) |
| 食性 | Exclusively aerial insectivore catching small flying insects and spiders drifting in aerial plankton at altitude. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Plain Swift
Harsh, grating scream with descending inflection; loud raspy calls carrying urgency, often given during colony disturbance.
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
Plain Swift
Breeds on the Azores, Madeira, and Canary Islands. Resident on these Macaronesian archipelagos. Closely related to Common Swift.
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
Plain Swift
Chestnut-collared Swift
How to Tell Them Apart
Plain Swift
Dark sooty-brown plumage; very faint pale chin; no distinct throat patch; entirely plain and uniform; smaller than Common Swift; Macaronesian endemic breeding in Canary Islands and Madeira; coloration slightly paler …
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
Plain Swift
单色雨燕在大西洋岛屿和非洲西北部繁殖，具有黑褐色羽毛。
Chestnut-collared Swift
栗领雨燕栖息于中美洲和南美洲北部的山地。