African Palm Swift vs Fork-tailed Palm Swift
Cypsiurus parvus 比較対象 Tachornis squamata
Side-by-Side Comparison
| 属性 | African Palm Swift | Fork-tailed Palm Swift |
|---|---|---|
| 学名 | Cypsiurus parvus | Tachornis squamata |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 27.2 cm (10.7 in) | 20.7 cm (8.1 in) |
| 体重 | 14.38 g (0.51 oz) | 10.4 g (0.37 oz) |
| 食性 | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. | Obligate aerial insectivore; takes small flies, beetles, and aerial spiders in swooping fast-flight passes. |
| 一腹卵数 | 1-3 | 2-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Fork-tailed Palm Swift
Loud, penetrating scream cutting above all noise; strident series of shrill descending notes, powerful for the bird's size.
Geographic Range & Migration
African Palm Swift
Found across sub-Saharan Africa from Senegal east to Somalia and south to South Africa. Common in open areas near palms; nests in palm leaves.
Fork-tailed Palm Swift
Found in the Amazon basin from Venezuela and the Guianas south to Peru, Bolivia, and Brazil. Resident near Mauritia palm swamps.
保全状況
African Palm Swift
Fork-tailed Palm Swift
How to Tell Them Apart
African Palm Swift
Slender and long-tailed; uniformly pale greyish-brown overall; underparts paler grey-buff; long deeply forked tail; pale uniform appearance with no contrasting markings; widespread African palm-nesting swift with distinctive slender silhouette.
Fork-tailed Palm Swift
Tiny; dark brown-black upperparts; white rump patch; underparts whitish with dark flanks; deeply forked tail; Amazonian species closely resembling Antillean Palm Swift; nests in Mauritia palm fronds; white rump and …
About These Birds
African Palm Swift
A slender swift (15-17 cm) with long, narrow wings and a deeply forked tail. Dark brown plumage. Found across sub-Saharan Africa in savanna and open woodland, closely associated with palm trees. Aerial insectivore. One of Africa's most abundant swift species.
Fork-tailed Palm Swift
A small swift (12-13 cm) found in open country and palm savannas from Central America to southern Brazil and Trinidad. Dark plumage. Long, deeply forked tail. Aerial insectivore, closely associated with various palm species, nesting inside hanging dead palm fronds.