Great Dusky Swift vs Mottled Spinetail
Cypseloides senex 비교 대상 Telacanthura ussheri
Side-by-Side Comparison
| 속성 | Great Dusky Swift | Mottled Spinetail |
|---|---|---|
| 학명 | Cypseloides senex | Telacanthura ussheri |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 33.8 cm (13.3 in) | 29.1 cm (11.5 in) |
| 체중 | 83.0 g (2.93 oz) | 32.65 g (1.15 oz) |
| 식성 | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … | Aerial diet of small flying insects and spiders; forages at speed over forest and open … |
| 산란 수 | 1-2 | 4 |
| 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 Spinetail
Harsh, grating screech followed by rapid chattering; loud, raspy trill repeated insistently near colony roost sites.
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 Spinetail
Found across sub-Saharan Africa from Gambia east to Ethiopia and south to Zambia. Resident in forest, forest edge, and savanna woodland.
보전 상태
Great Dusky Swift
Mottled 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 …
Mottled Spinetail
Large spinetail; dark blackish-brown upperparts; white-mottled pale greyish underparts creating distinctively spotted belly; white rump band; spiny tail tips; African forest species with unique mottled underpart pattern among spinetails.
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 Spinetail
A medium-sized spinetail swift (14-15 cm) found in tropical forests across sub-Saharan Africa. Dark plumage with white mottling on the throat and belly. Spine-tipped tail for clinging to vertical surfaces. Aerial insectivore. Nests inside hollow trees and palm trunks.