Salim Ali's Swift vs Great Dusky Swift
Apus salimalii مقارنةً بـ Cypseloides senex
Side-by-Side Comparison
| السمة | Salim Ali's Swift | Great Dusky Swift |
|---|---|---|
| الاسم العلمي | Apus salimalii | Cypseloides senex |
| الرتبة | Caprimulgiformes | Caprimulgiformes |
| الفصيلة | Apodidae | Apodidae |
| حالة الحفاظ | Not Evaluated | Least Concern |
| الطول | — | — |
| طول الجناح | — | 33,8 cm (13.3 in) |
| الوزن | 42,949999999999996 g (1.52 oz) | 83,0 g (2.93 oz) |
| النظام الغذائي | Aerial-only diet of small flying insects, winged termites, and drifting spiders caught during continuous flight. | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … |
| عدد البيض في الوضع | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Salim Ali's Swift
Faint, high-pitched squeak nearly inaudible; minute twittering barely registering above background in dense forest habitats.
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
Salim Ali's Swift
Found in northeastern India, China, and Indochina. Resident or short-distance migrant in hill and mountain forest. Recently split from Pacific Swift.
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
حالة الحفاظ
Salim Ali's Swift
Great Dusky Swift
How to Tell Them Apart
Salim Ali's Swift
Dark sooty-brown upperparts; white rump patch; pale white throat; underparts dark; deeply forked tail; recently split from Pacific Swift; named in honour of Indian ornithologist Salim Ali; plumage virtually identical …
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
Salim Ali's Swift
A medium-sized swift recently described and split from Pacific Swift, found in the Western Ghats and central India. Dark plumage with a pale rump. Aerial insectivore. Named after the renowned Indian ornithologist Salim Ali. Limited ecological data as a newly recognized species.
Great Dusky Swift
A large swift (18-20 cm) of southeastern Brazil, eastern Paraguay, and northeastern Argentina. Dark sooty-brown plumage. Aerial insectivore, foraging over forested gorges and waterfalls. Nests in large colonies behind waterfalls. The largest member of the genus Cypseloides.