Moluccan Swiftlet vs Great Dusky Swift
Aerodramus infuscatus 对比 Cypseloides senex
Side-by-Side Comparison
| 属性 | Moluccan Swiftlet | Great Dusky Swift |
|---|---|---|
| 学名 | Aerodramus infuscatus | Cypseloides senex |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 21.2 cm (8.3 in) | 33.8 cm (13.3 in) |
| 体重 | 15.25 g (0.54 oz) | 83.0 g (2.93 oz) |
| 食性 | Aerial plankton specialist catching tiny flies, gnats, and airborne spiders in tight acrobatic flight. | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … |
| 产卵数 | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Moluccan Swiftlet
Thin twittering; soft 'chip-chip' calls over Maluku islands; echolocation clicks in caves; moderate-pitched for swiftlet; colonial roosts noisy with overlapping calls
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
Moluccan Swiftlet
Found on the Moluccan islands of Indonesia including Halmahera, Seram, and Ambon. Resident in forest and open habitats. Moluccan endemic.
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
Moluccan Swiftlet
Great Dusky Swift
How to Tell Them Apart
Moluccan Swiftlet
Small to medium; dark brown-grey upperparts with pale buff rump band; underparts pale whitish-grey; forked tail; North Moluccan endemic; slightly larger than many congeners with relatively prominent pale rump contrasting …
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
Moluccan Swiftlet
一种小型金丝燕（体长11厘米），分布于印度尼西亚摩鹿加群岛。体羽深褐色。属雨燕科（Apodidae），空中食虫，在岛屿洞穴中繁殖。
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。