Short-tailed Swift vs Alpine Swift
Chaetura brachyura 比較対象 Tachymarptis melba
Side-by-Side Comparison
| 属性 | Short-tailed Swift | Alpine Swift |
|---|---|---|
| 学名 | Chaetura brachyura | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 23.7 cm (9.3 in) | 43.9 cm (17.3 in) |
| 体重 | 18.625 g (0.66 oz) | 97.5 g (3.44 oz) |
| 食性 | Feeds exclusively on aerial plankton — tiny flies, aphids, and spiders — captured in continuous … | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 一腹卵数 | 2-7 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Short-tailed Swift
Harsh, screaming chatter with emphatic delivery; loud coarse notes erupting suddenly during competitive aerial encounters.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Short-tailed Swift
Found across South America east of the Andes, from Trinidad and the Guianas south to Bolivia and the Río de la Plata. Lowland forest.
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
Short-tailed Swift
Alpine Swift
How to Tell Them Apart
Short-tailed Swift
Small; dark sooty-brown upperparts; very pale whitish rump and tail contrasting sharply with dark body; underparts pale greyish; extremely short tail giving distinctive blunt-ended flight silhouette; widespread Trinidad to Argentina.
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
Short-tailed Swift
パナマからブラジル南部・トリニダードの低地林に生息する小型アマツバメ（10〜11 cm）。顕著に短い角型の尾に棘先端を持つ暗い羽衣。空中で昆虫を捕食。林上・農耕地を飛翔。
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。