Bradfield's Swift vs African Palm Swift
Apus bradfieldi 对比 Cypsiurus parvus
Side-by-Side Comparison
| 属性 | Bradfield's Swift | African Palm Swift |
|---|---|---|
| 学名 | Apus bradfieldi | Cypsiurus parvus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 35.2 cm (13.9 in) | 27.2 cm (10.7 in) |
| 体重 | 44.25 g (1.56 oz) | 14.38 g (0.51 oz) |
| 食性 | Entirely aerial insectivore consuming swarms of tiny flies, winged ants, and ballooning spiders on the … | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 产卵数 | 2 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bradfield's Swift
Pure, whistled two-note phrase; first note high and sustained, second lower and brief, repeated every few seconds clearly.
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Bradfield's Swift
Found in Namibia and adjacent parts of South Africa, Botswana, and Angola. Resident in rocky desert, escarpment cliffs, and semi-arid terrain.
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.
保护状况
Bradfield's Swift
African Palm Swift
How to Tell Them Apart
Bradfield's Swift
Dark sooty-brown overall; pale greyish throat patch; underparts slightly paler; large for an African Apus swift; Southern Africa dry-country specialist; slightly larger and greyer-toned than Pallid Swift with less pale …
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
Bradfield's Swift
布拉德菲尔德雨燕栖息于纳米比亚和安哥拉周边的南部非洲，是淡色的雨燕。
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.