Great Dusky Swift vs Papuan Spinetail
Cypseloides senex 비교 대상 Mearnsia novaeguineae
Side-by-Side Comparison
| 속성 | Great Dusky Swift | Papuan Spinetail |
|---|---|---|
| 학명 | Cypseloides senex | Mearnsia novaeguineae |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 33.8 cm (13.3 in) | 26.0 cm (10.2 in) |
| 체중 | 83.0 g (2.93 oz) | 34.0 g (1.20 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 | -- |
| 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
Papuan Spinetail
Rapid buzzy twittering; sharp 'tsit-tsit-tsit' in low speedy flight; calls in tight flocks over New Guinea forest and rivers; wings produce audible whirring sound in fast flight
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.
Papuan Spinetail
Found in New Guinea from the northern coast to central ranges. Resident in lowland and hill forest along rivers and forest edge up to 1,500 m.
보전 상태
Great Dusky Swift
Papuan Spinetail
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 …
Papuan Spinetail
Dark blackish-brown upperparts; paler brownish-grey underparts; pale chin; short spiny tail with projecting shaft tips; New Guinea species; larger than Philippine Spinetail with broader wings relative to body; robust spinetail …
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.
Papuan Spinetail
중간 크기의 칼새로 체장 약 15cm이며, 짙은 갈색 또는 검은색 전신에 흰색 허리 반점을 갖는다. 뉴기니 저지대와 구릉지 숲 상공을 날며 곤충을 잡아먹는다. 관심 필요 종이다.