Black Swift vs Alpine Swift
Cypseloides niger 对比 Tachymarptis melba
Side-by-Side Comparison
| 属性 | Black Swift | Alpine Swift |
|---|---|---|
| 学名 | Cypseloides niger | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 29.9 cm (11.8 in) | 43.9 cm (17.3 in) |
| 体重 | 41.55 g (1.47 oz) | 97.5 g (3.44 oz) |
| 食性 | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 产卵数 | 1 | 1-4 |
| 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
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
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.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
保护状况
Black Swift
Alpine 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 …
Alpine Swift
Large; dark brown upperparts; white throat patch separated from white belly by dark brown breast band; brown flanks; bold tricoloured underpart pattern; one of Europe's largest swifts with distinctive white …
About These Birds
Black Swift
黑雨燕在北美西部的瀑布和悬崖上繁殖，是全身黑色的大型雨燕。
Alpine Swift
高山雨燕在欧洲山地和岩壁上繁殖，以白色腹部和较大体型为特征的长距离迁徙鸟类。