Pale-rumped Swift vs Alpine Swift
Chaetura egregia 比較対象 Tachymarptis melba
Side-by-Side Comparison
| 属性 | Pale-rumped Swift | Alpine Swift |
|---|---|---|
| 学名 | Chaetura egregia | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 23.4 cm (9.2 in) | 43.9 cm (17.3 in) |
| 体重 | 23.68 g (0.84 oz) | 97.5 g (3.44 oz) |
| 食性 | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 一腹卵数 | -- | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pale-rumped Swift
Breathy, rippling chatter with airy quality; light twittering notes loosely strung together in relaxed arrhythmic sequences.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Pale-rumped Swift
Found in the western Amazon basin from eastern Peru and Bolivia east to central Brazil. Resident in lowland tropical forest near rivers.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
保全状況
Pale-rumped Swift
Alpine Swift
How to Tell Them Apart
Pale-rumped Swift
Small; dark sooty-brown upperparts; distinctively very pale whitish rump strongly contrasting with dark back; underparts dark grey-brown; short spiny tail; Amazonian species with one of the most striking white rumps …
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
Pale-rumped Swift
コロンビアからペルー・ブラジル西部の湿潤低地林に生息する小型アマツバメ（11〜12 cm）。顕著な淡い腰帯を持つ暗い羽衣。棘状の尾。空中で昆虫を捕食。
Alpine Swift
アルプスアマツバメはヨーロッパの山岳地帯と岩壁に繁殖し、白い腹と大きな体が特徴的な長距離渡り鳥である。