Great Dusky Swift vs White-throated Needletail
Cypseloides senex 비교 대상 Hirundapus caudacutus
Side-by-Side Comparison
| 속성 | Great Dusky Swift | White-throated Needletail |
|---|---|---|
| 학명 | Cypseloides senex | Hirundapus caudacutus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 33.8 cm (13.3 in) | 41.2 cm (16.2 in) |
| 체중 | 83.0 g (2.93 oz) | 101.475 g (3.58 oz) |
| 식성 | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … | High-speed aerial insectivore catching small flying insects and aerial spiders during fast sustained flight. |
| 산란 수 | 1-2 | 2-7 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
White-throated Needletail
Powerful, loud churring rattle descending in pitch; deep resonant trill audible from great distance, forceful and sustained.
Geographic Range & Migration
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
White-throated Needletail
Breeds in Siberia, China, Japan, and the Himalayas. Long-distance migrant wintering in Australasia and Southeast Asia. Breeds in forests and cliffs.
보전 상태
Great Dusky Swift
White-throated Needletail
How to Tell Them Apart
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 …
White-throated Needletail
Large; dark blackish-brown upperparts with metallic green gloss; white throat and undertail coverts; pale white back saddle between wings; short spiny tail; one of the world's fastest birds; white throat …
About These Birds
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.
White-throated Needletail
흰등침꼬리칼새(Hirundapus caudacutus)는 강력하고 빠른 비행을 하는 19–20cm, 날개 길이 50–55cm의 대형 침꼬리 칼새다. 갈색 깃털에 흰 목과 아랫배를 지닌다.