Great Dusky Swift vs Mottled Swift
Cypseloides senex 비교 대상 Tachymarptis aequatorialis
Side-by-Side Comparison
| 속성 | Great Dusky Swift | Mottled Swift |
|---|---|---|
| 학명 | Cypseloides senex | Tachymarptis aequatorialis |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 33.8 cm (13.3 in) | 41.5 cm (16.3 in) |
| 체중 | 83.0 g (2.93 oz) | 94.0 g (3.32 oz) |
| 식성 | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| 산란 수 | 1-2 | 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
Mottled Swift
Rough, coarse chatter with scratchy texture; bursts of harsh notes blending into continuous buzzy trill near nesting cliffs.
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.
Mottled Swift
Found across equatorial Africa from Guinea east to Ethiopia and south to Zambia. Resident in highland forests and rocky cliffs at 900–3,400 m.
보전 상태
Great Dusky Swift
Mottled Swift
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 …
Mottled Swift
Large; dark brown upperparts; mottled white and brown underparts with white scales on each feather creating scaled appearance; pale throat; African montane species closely related to Alpine Swift but with …
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.
Mottled Swift
A large swift (20-22 cm) found in montane regions of eastern and southern Africa, typically at 1,500-3,000 m elevation. Dark plumage with mottled white underparts and throat. Aerial insectivore. Often seen in large flocks soaring over mountain escarpments and gorges.