Philippine Swiftlet vs Great Dusky Swift
Aerodramus mearnsi 비교 대상 Cypseloides senex
Side-by-Side Comparison
| 속성 | Philippine Swiftlet | Great Dusky Swift |
|---|---|---|
| 학명 | Aerodramus mearnsi | Cypseloides senex |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 21.8 cm (8.6 in) | 33.8 cm (13.3 in) |
| 체중 | 11.5 g (0.41 oz) | 83.0 g (2.93 oz) |
| 식성 | Obligate aerial feeder on microscopic flying insects and spiders; highly social forager over tropical forest. | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … |
| 산란 수 | 4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Philippine Swiftlet
High twittering trill; thin 'tsit-tsit' notes over Philippine mountains; echolocation clicks in cave roosts; calls softly; flock produces chattering at roost; unremarkable vocalizations
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
Philippine Swiftlet
Endemic to the Philippines, found on Luzon, Mindanao, Mindoro, and adjacent islands. Resident in lowland and hill forest and open areas.
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
Philippine Swiftlet
Great Dusky Swift
How to Tell Them Apart
Philippine Swiftlet
Small; dark grey-brown upperparts with faint gloss; pale grey rump band; underparts greyish-white; moderately forked tail; Philippine endemic using echolocation; echolocation ability distinguishes Aerodramus from Collocalia swiftlets.
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
Philippine Swiftlet
필리핀 고유의 작은 칼새류(10~11cm). 어두운 깃털에 연한 허리. 공중 식충성이다.
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.