Caroline Swiftlet vs African Palm Swift
Aerodramus inquietus в сравнении с Cypsiurus parvus
Side-by-Side Comparison
| Характеристика | Caroline Swiftlet | African Palm Swift |
|---|---|---|
| Научное название | Aerodramus inquietus | Cypsiurus parvus |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Apodidae | Apodidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 22,8 cm (9.0 in) | 27,2 cm (10.7 in) |
| Масса | 11,0 g (0.39 oz) | 14,38 g (0.51 oz) |
| Питание | Feeds on aerial plankton including tiny flies and spiders; forages in large noisy flocks above … | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| Размер кладки | 1-2 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Caroline Swiftlet only
Нет
African Palm Swift only
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
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Caroline Swiftlet
Found across the Caroline Islands of Micronesia including Pohnpei and Chuuk. Resident in lowland forest and cave systems.
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.
Охранный статус
Caroline Swiftlet
African Palm 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.
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
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.
African Palm Swift
A slender swift (15-17 cm) with long, narrow wings and a deeply forked tail. Dark brown plumage. Found across sub-Saharan Africa in savanna and open woodland, closely associated with palm trees. Aerial insectivore. One of Africa's most abundant swift species.