Black Swift vs African Palm Swift
Cypseloides niger 比較対象 Cypsiurus parvus
Side-by-Side Comparison
| 属性 | Black Swift | African Palm Swift |
|---|---|---|
| 学名 | Cypseloides niger | Cypsiurus parvus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 29.9 cm (11.8 in) | 27.2 cm (10.7 in) |
| 体重 | 41.55 g (1.47 oz) | 14.38 g (0.51 oz) |
| 食性 | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 一腹卵数 | 1 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black Swift
Soft, buzzy chittering 'spee-spee'; thin twittering over mountain waterfalls; higher and softer than Common Swift; small flocks call weakly over nesting cliffs
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Black Swift
Breeds in western North America from Alaska south to California and the Caribbean. Migrates to winter in Mexico and Central America.
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.
保全状況
Black Swift
African Palm Swift
How to Tell Them Apart
Black Swift
Entirely black with slight glossy sheen; faint pale scaling on forehead and chin in fresh plumage; broad-winged and large-bodied; slightly forked tail; sexes alike; North American cliff-nesting swift with wholly …
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.
About These Birds
Black Swift
クロアマツバメは北アメリカ西部の滝や崖に繁殖し、全身黒色の大型のアマツバメである。
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.