Caroline Swiftlet vs Pallid Swift
Aerodramus inquietus 비교 대상 Apus pallidus
Side-by-Side Comparison
| 속성 | Caroline Swiftlet | Pallid Swift |
|---|---|---|
| 학명 | Aerodramus inquietus | Apus pallidus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 22.8 cm (9.0 in) | 33.4 cm (13.1 in) |
| 체중 | 11.0 g (0.39 oz) | 42.25 g (1.49 oz) |
| 식성 | Feeds on aerial plankton including tiny flies and spiders; forages in large noisy flocks above … | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. |
| 산란 수 | 1-2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Caroline Swiftlet
Thin twittering calls; 'tsit-tsit' over Caroline Islands; echolocation clicks in cave roosts; moderate-pitched for swiftlet; produces soft chattering at colonial nesting sites
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Geographic Range & Migration
Caroline Swiftlet
Found across the Caroline Islands of Micronesia including Pohnpei and Chuuk. Resident in lowland forest and cave systems.
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
보전 상태
Caroline Swiftlet
Pallid Swift
How to Tell Them Apart
Caroline Swiftlet
Small; dark grey-brown upperparts; pale buff rump band; underparts pale greyish-white; forked tail; Micronesian endemic from Caroline Islands; very similar to Palau Swiftlet but distributed on a distinct island group.
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
Caroline Swiftlet
미크로네시아 캐롤라인 제도(폰페이, 코스라에)에 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.