Dark-rumped Swift vs White-collared Swift
Apus acuticauda 比較対象 Streptoprocne zonaris
Side-by-Side Comparison
| 属性 | Dark-rumped Swift | White-collared Swift |
|---|---|---|
| 学名 | Apus acuticauda | Streptoprocne zonaris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 34.8 cm (13.7 in) | 42.5 cm (16.7 in) |
| 体重 | 37.43 g (1.32 oz) | 106.45 g (3.75 oz) |
| 食性 | Aerial insectivore feeding on swarms of small flies, winged ants, and tiny beetles during sustained … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 一腹卵数 | 2-4 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Dark-rumped Swift
Thin, high twittering with silvery sheen; rapid sequence of light notes with gentle tremolo quality at dawn and dusk.
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
Dark-rumped Swift
Found in northeastern India (Assam) and adjacent Myanmar. Rare and poorly known; found in forested hills and river valleys at moderate elevation.
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
Dark-rumped Swift
White-collared Swift
How to Tell Them Apart
Dark-rumped Swift
Dark sooty-brown throughout with dark rump concolorous with back; no contrasting white rump patch; pale white throat; underparts dark brown; Himalayan endemic cliff-nester; dark rump contrasting with white-rumped relatives is …
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
Dark-rumped Swift
インドアマツバメはインド亜大陸に固有の種で、尖った尾が特徴的な中型のアマツバメである。
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。