Indian Swiftlet vs White-collared Swift
Aerodramus unicolor 对比 Streptoprocne zonaris
Side-by-Side Comparison
| 属性 | Indian Swiftlet | White-collared Swift |
|---|---|---|
| 学名 | Aerodramus unicolor | Streptoprocne zonaris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 22.7 cm (8.9 in) | 42.5 cm (16.7 in) |
| 体重 | 11.0 g (0.39 oz) | 106.45 g (3.75 oz) |
| 食性 | Tiny aerial insectivore taking small flying insects and spiders; congregates where insects emerge over water. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Indian Swiftlet
Rapid, thin twittering; 'tsit-tsit' calls over South Indian hills; audible echolocation clicks in cave roosts; colonial; calls softly in flight; noisy at roost entrances
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
Geographic Range & Migration
Indian Swiftlet
Found in Sri Lanka and southwestern India. Resident in hills and lowlands, nesting in rock crevices on cliff faces up to 2,000 m elevation.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
保护状况
Indian Swiftlet
White-collared Swift
How to Tell Them Apart
Indian Swiftlet
Small; uniformly dark blackish-brown throughout with minimal gloss; rump barely paler than back or concolorous; underparts dark grey-brown; forked tail; South Indian and Sri Lankan endemic with exceptionally uniform dark …
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
About These Birds
Indian Swiftlet
一种小型金丝燕（体长11-12厘米），分布于印度次大陆和斯里兰卡各地。体羽深灰褐色，全身色泽均一。属雨燕科（Apodidae），在南亚洞穴和悬崖上繁殖。
White-collared Swift
白领雨燕广泛分布于拉丁美洲山地，以白色颈环为特征的大型雨燕。