White-throated Swift vs Alpine Swift
Aeronautes saxatalis 对比 Tachymarptis melba
Side-by-Side Comparison
| 属性 | White-throated Swift | Alpine Swift |
|---|---|---|
| 学名 | Aeronautes saxatalis | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 28.1 cm (11.1 in) | 43.9 cm (17.3 in) |
| 体重 | 34.03 g (1.20 oz) | 97.5 g (3.44 oz) |
| 食性 | Aerial insectivore relying entirely on flying insects (midges, gnats, small beetles) and airborne spiders. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 产卵数 | 3-6 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-throated Swift
Sharp, whistled notes alternating with buzzy trills; crisp di-di-dit pattern repeated rhythmically during swift soaring flights.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
White-throated Swift
Found in western North America from British Columbia south through the Rocky Mountains to Central America. Partially migratory northward.
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
White-throated Swift
Alpine Swift
How to Tell Them Apart
White-throated Swift
Black upperparts; bold white throat and white flanks extending to white central underparts; black sides of breast and belly create striking tricoloured pattern; white lateral tail spots; Western North American …
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
White-throated Swift
一种中型雨燕（体长15-17厘米），体羽黑白相间，是北美雨燕中独具一格的物种。属雨燕科（Apodidae），分布于北美西部山地，被称为"白腰雨燕"，在悬崖峭壁上繁殖。
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。