Short-tailed Swift vs African Palm Swift
Chaetura brachyura 比較対象 Cypsiurus parvus
Side-by-Side Comparison
| 属性 | Short-tailed Swift | African Palm Swift |
|---|---|---|
| 学名 | Chaetura brachyura | Cypsiurus parvus |
| 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) | 27.2 cm (10.7 in) |
| 体重 | 18.625 g (0.66 oz) | 14.38 g (0.51 oz) |
| 食性 | Feeds exclusively on aerial plankton — tiny flies, aphids, and spiders — captured in continuous … | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 一腹卵数 | 2-7 | 1-3 |
| 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.
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
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.
African Palm Swift
Found across sub-Saharan Africa from Senegal east to Somalia and south to South Africa. Common in open areas near palms; nests in palm leaves.
保全状況
Short-tailed Swift
African Palm 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.
African Palm Swift
Slender and long-tailed; uniformly pale greyish-brown overall; underparts paler grey-buff; long deeply forked tail; pale uniform appearance with no contrasting markings; widespread African palm-nesting swift with distinctive slender silhouette.
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。
African Palm Swift
A slender swift (15-17 cm) with long, narrow wings and a deeply forked tail. Dark brown plumage. Found across sub-Saharan Africa in savanna and open woodland, closely associated with palm trees. Aerial insectivore. One of Africa's most abundant swift species.