Palau Swiftlet vs African Palm Swift
Aerodramus pelewensis 비교 대상 Cypsiurus parvus
Side-by-Side Comparison
| 속성 | Palau Swiftlet | African Palm Swift |
|---|---|---|
| 학명 | Aerodramus pelewensis | Cypsiurus parvus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 21.5 cm (8.5 in) | 27.2 cm (10.7 in) |
| 체중 | 13.3 g (0.47 oz) | 14.38 g (0.51 oz) |
| 식성 | Aerial plankton specialist catching tiny flies, gnats, and airborne spiders in tight acrobatic flight. | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 산란 수 | 1 | 1-3 |
| 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
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
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.
African Palm Swift
Found across sub-Saharan Africa from Senegal east to Somalia and south to South Africa. Common in open areas near palms; nests in palm leaves.
보전 상태
Palau Swiftlet
African Palm 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.
African Palm Swift
Slender and long-tailed; uniformly pale greyish-brown overall; underparts paler grey-buff; long deeply forked tail; pale uniform appearance with no contrasting markings; widespread African palm-nesting swift with distinctive slender silhouette.
About These Birds
Palau Swiftlet
서태평양 팔라우 군도에 고유하게 서식하는 작은 칼새류(10~11cm). 어두운 깃털. 공중 식충성이다.
African Palm Swift
길고 좁은 날개와 깊이 갈라진 꼬리를 가진 15–17 cm의 가는 칼새. 어두운 갈색 깃털. 사바나와 개방 삼림의 야자나무와 밀접하게 연관되어 사하라 이남 아프리카 전역에 분포. 공중 곤충식성. 아프리카에서 가장 풍부한 칼새 중 하나.