Caroline Swiftlet vs Pallid Swift
Aerodramus inquietus comparé à Apus pallidus
Side-by-Side Comparison
| Attribut | Caroline Swiftlet | Pallid Swift |
|---|---|---|
| Nom scientifique | Aerodramus inquietus | Apus pallidus |
| Ordre | Caprimulgiformes | Caprimulgiformes |
| Famille | Apodidae | Apodidae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | — | — |
| Envergure | 22,8 cm (9.0 in) | 33,4 cm (13.1 in) |
| Poids | 11,0 g (0.39 oz) | 42,25 g (1.49 oz) |
| Régime alimentaire | 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. |
| Taille de la couvée | 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.
Statut de conservation
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
A small swiftlet (10-11 cm) endemic to the Caroline Islands of Micronesia (Pohnpei, Kosrae). Dark plumage. Aerial insectivore, foraging over forest canopy. Colonial cave nester. Restricted to a few high volcanic islands in the western Pacific.
Pallid Swift
A medium-sized swift (16-17 cm) similar to Common Swift but paler, sandy-brown overall with a larger white throat patch. Found across southern Europe, North Africa, and the Middle East. Aerial insectivore. Long-distance migrant wintering in sub-Saharan Africa and South Asia.