White-throated Swift vs White-collared Swift
Aeronautes saxatalis 比較対象 Streptoprocne zonaris
Side-by-Side Comparison
| 属性 | White-throated Swift | White-collared Swift |
|---|---|---|
| 学名 | Aeronautes saxatalis | Streptoprocne zonaris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 28.1 cm (11.1 in) | 42.5 cm (16.7 in) |
| 体重 | 34.03 g (1.20 oz) | 106.45 g (3.75 oz) |
| 食性 | Aerial insectivore relying entirely on flying insects (midges, gnats, small beetles) and airborne spiders. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 一腹卵数 | 3-6 | 2 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
None
White-throated Swift only
White-collared Swift only
Song & Call Comparison
White-throated Swift
Sharp, whistled notes alternating with buzzy trills; crisp di-di-dit pattern repeated rhythmically during swift soaring flights.
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
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.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
保全状況
White-throated Swift
White-collared 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 …
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
About These Birds
White-throated Swift
A medium-sized swift (15-17 cm) with striking black and white plumage, unique among North American swifts. White throat, breast, and flank patches contrast with black body. Found in canyons and cliffs of western North America. Aerial insectivore; resident in southern range.
White-collared Swift
ホワイトカラードスウィフトはラテンアメリカ全域の山岳地帯に広く分布し、白い首輪が特徴的な大型のアマツバメである。