Seychelles Swiftlet vs African Palm Swift
Aerodramus elaphrus 对比 Cypsiurus parvus
Side-by-Side Comparison
| 属性 | Seychelles Swiftlet | African Palm Swift |
|---|---|---|
| 学名 | Aerodramus elaphrus | Cypsiurus parvus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 22.6 cm (8.9 in) | 27.2 cm (10.7 in) |
| 体重 | 11.266666666666666 g (0.40 oz) | 14.38 g (0.51 oz) |
| 食性 | Feeds aerially on tiny flying insects and drifting spiders; often forages in mixed-species flocks over … | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. |
| 产卵数 | 1 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Seychelles Swiftlet
Rapid twittering; thin 'tsit-tsit' over Seychelles islands; audible echolocation clicks in caves; endangered endemic; calls weakly in small flocks over forest and coast
African Palm Swift
Deep, hollow churring trill with resonant bass quality; prolonged vibrating call audible at significant range in open woodland.
Geographic Range & Migration
Seychelles Swiftlet
Endemic to the Seychelles Islands in the western Indian Ocean. Resident on the main granitic islands including Mahé. Nests in sea caves.
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.
保护状况
Seychelles Swiftlet
African Palm Swift
How to Tell Them Apart
Seychelles Swiftlet
Small; dark brownish-grey upperparts with slight gloss; pale grey-buff rump band; underparts whitish-grey; forked tail; Seychelles endemic and vulnerable due to restricted range; slightly larger and less glossy than sympatric …
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
Seychelles Swiftlet
一种小型金丝燕（体长10-11厘米），特产于印度洋塞舌尔群岛。体羽深灰褐色。属雨燕科（Apodidae），在岛上的洞穴和悬崖上繁殖，种群数量有限。
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.