Dark-rumped Swift vs White-collared Swift
Apus acuticauda 비교 대상 Streptoprocne zonaris
Side-by-Side Comparison
| 속성 | Dark-rumped Swift | White-collared Swift |
|---|---|---|
| 학명 | Apus acuticauda | Streptoprocne zonaris |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.8 cm (13.7 in) | 42.5 cm (16.7 in) |
| 체중 | 37.43 g (1.32 oz) | 106.45 g (3.75 oz) |
| 식성 | 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. |
| 산란 수 | 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.
보전 상태
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
날카로운 꼬리 칼새는 인도 북동부와 미얀마, 방글라데시에 서식하는 희귀한 칼새입니다. V자 형태로 갈라진 꼬리와 전체적으로 어두운 깃털이 특징이며, 산악 지형에서 서식합니다.
White-collared Swift
A very large swift (20-22 cm, wingspan 45-55 cm) with a bold white collar band, the largest New World swift. Found from Mexico to southern Brazil and the Caribbean. Aerial insectivore, foraging in large, noisy flocks over forests and cities. Nests behind waterfalls and in caves.