White-rumped Swift vs Great Dusky Swift
Apus caffer 비교 대상 Cypseloides senex
Side-by-Side Comparison
| 속성 | White-rumped Swift | Great Dusky Swift |
|---|---|---|
| 학명 | Apus caffer | Cypseloides senex |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 29.0 cm (11.4 in) | 33.8 cm (13.3 in) |
| 체중 | 23.0 g (0.81 oz) | 83.0 g (2.93 oz) |
| 식성 | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … |
| 산란 수 | 1-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-rumped Swift
Deep, guttural churring with resonant buzzing quality; prolonged low-frequency trill vibrating persistently through dense foliage.
Great Dusky Swift
Loud, churring trill; harsher and louder than other Cypseloides; calls over Iguacu Falls and major Neotropical waterfalls; buzzy 'bzzzt-bzzzt' in aerial groups
Geographic Range & Migration
White-rumped Swift
Breeds in southern Europe and North Africa east to Central Asia. Migratory; winters in sub-Saharan Africa from Senegal south to South Africa.
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
보전 상태
White-rumped Swift
Great Dusky Swift
How to Tell Them Apart
White-rumped Swift
Dark sooty-brown; narrow elongated white rump patch; white throat; underparts dark; forked tail; African species; narrower and more elongated white rump than Little Swift; deeply forked tail unlike the square …
Great Dusky Swift
Very large; entirely dark sooty-brown with pale grey forehead and chin scaling; slightly paler underparts; broad wings; largest Cypseloides swift; South American waterfall specialist with dusky uniform plumage and imposing …
About These Birds
White-rumped Swift
흰 허리 칼새는 아프리카 동부와 남부에 서식하는 소형 칼새입니다. 이름에서 알 수 있듯이 흰 허리 패치가 특징이며, 그 집을 만들 때 연미봉 새집을 자주 사용합니다.
Great Dusky Swift
18–20 cm의 대형 칼새로 브라질 동남부·파라과이 동부·아르헨티나 북동부에 서식. 어두운 그을린 갈색 깃털. 삼림 협곡과 폭포 위를 날며 먹이를 구하는 공중 곤충식성. 폭포 뒤에 대규모 집단으로 둥지를 튼다. Cypseloides 속의 가장 큰 종.