Palau Swiftlet vs Pallid Swift
Aerodramus pelewensis 비교 대상 Apus pallidus
Side-by-Side Comparison
| 속성 | Palau Swiftlet | Pallid Swift |
|---|---|---|
| 학명 | Aerodramus pelewensis | Apus pallidus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 21.5 cm (8.5 in) | 33.4 cm (13.1 in) |
| 체중 | 13.3 g (0.47 oz) | 42.25 g (1.49 oz) |
| 식성 | Aerial plankton specialist catching tiny flies, gnats, and airborne spiders in tight acrobatic flight. | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. |
| 산란 수 | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Palau Swiftlet
Rapid thin twittering; high 'tsit' notes over Palau islands; audible echolocation clicks in cave and building roosts; endemic island species; calls weakly in small flocks
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Geographic Range & Migration
Palau Swiftlet
Endemic to the Palau Islands in Micronesia. Resident on all major islands; nests in limestone caves. Small but stable population.
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
보전 상태
Palau Swiftlet
Pallid Swift
How to Tell Them Apart
Palau Swiftlet
Small; dark grey-brown upperparts; pale buff-grey rump band; underparts pale greyish-white; forked tail; Palau Island endemic; closely resembles Caroline Swiftlet but restricted to Palau and differing in subtle measurements.
Pallid Swift
Medium-large; pale brownish-grey overall, distinctly paler than Common Swift; larger pale throat patch; wing coverts show pale scaly edges; Mediterranean and Middle Eastern species; pale sandy-brown tone separates it from …
About These Birds
Palau Swiftlet
서태평양 팔라우 군도에 고유하게 서식하는 작은 칼새류(10~11cm). 어두운 깃털. 공중 식충성이다.
Pallid Swift
창백한 칼새는 지중해와 중동, 아시아 중부에서 번식하고 아프리카에서 월동합니다. 연한 갈색 깃털과 목의 연한 색이 특징이며, 절벽과 건물에서 번식합니다.