Glossy Swiftlet vs Great Dusky Swift
Collocalia esculenta 对比 Cypseloides senex
Side-by-Side Comparison
| 属性 | Glossy Swiftlet | Great Dusky Swift |
|---|---|---|
| 学名 | Collocalia esculenta | Cypseloides senex |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 19.9 cm (7.8 in) | 33.8 cm (13.3 in) |
| 体重 | 8.66 g (0.31 oz) | 83.0 g (2.93 oz) |
| 食性 | Feeds on aerial plankton including tiny flies and spiders; forages in large noisy flocks above … | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … |
| 产卵数 | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Glossy Swiftlet
Rapid, high-pitched twittering; thin 'tsit-tsit-tsit' in flight; echolocation clicks audible in cave roosts; very common; calls over forest and open areas; colonial and noisy
Great Dusky Swift
Loud, churring trill; harsher and louder than other Cypseloides; calls over Iguacu Falls and major Neotropical waterfalls; buzzy 'bzzzt-bzzzt' in aerial groups
Geographic Range & Migration
Glossy Swiftlet
Found from India and Sri Lanka through Southeast Asia to New Guinea, Australia, and Pacific islands. One of the most widespread swiftlets.
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
保护状况
Glossy Swiftlet
Great Dusky Swift
How to Tell Them Apart
Glossy Swiftlet
Tiny; brilliant blue-green glossy upperparts; contrasting white rump patch; white underparts; deeply forked tail; widespread Indo-Pacific species and one of the most colourful swiftlets with a striking tricolour of gloss, …
Great Dusky Swift
Very large; entirely dark sooty-brown with pale grey forehead and chin scaling; slightly paler underparts; broad wings; largest Cypseloides swift; South American waterfall specialist with dusky uniform plumage and imposing …
About These Birds
Glossy Swiftlet
灰腰金丝燕从印度到太平洋诸岛广泛分布，具有光泽绿黑色羽毛的小型金丝燕。
Great Dusky Swift
大暗色雨燕分布于巴西和阿根廷，在大型瀑布附近繁殖的雨燕。