Pallid Swift vs Western Glossy Swiftlet
Apus pallidus 比較対象 Collocalia affinis
Side-by-Side Comparison
| 属性 | Pallid Swift | Western Glossy Swiftlet |
|---|---|---|
| 学名 | Apus pallidus | Collocalia affinis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 33.4 cm (13.1 in) | — |
| 体重 | 42.25 g (1.49 oz) | 8.65 g (0.31 oz) |
| 食性 | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Aerial insectivore consuming minute dipterans, midges, and ballooning spiders caught in continuous fast flight. |
| 一腹卵数 | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Western Glossy Swiftlet
High, thin 'tsit-tsit'; rapid chittering in flight; echolocation clicks used inside caves; tiny size produces very high-pitched thin calls; soft twittering over forest
Geographic Range & Migration
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
Western Glossy Swiftlet
Found from the Andaman Islands and northeastern India through Southeast Asia to Borneo and the Philippines. Resident in diverse forest habitats.
保全状況
Pallid Swift
Western Glossy Swiftlet
How to Tell Them Apart
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 …
Western Glossy Swiftlet
Tiny; glossy blue-black upperparts with green iridescence; underparts dark sooty-grey; white-buff rump band; deeply forked tail; recently split taxon similar to Philippine Glossy Swiftlet but with subtly different rump and …
About These Birds
Pallid Swift
カフリアマツバメは地中海沿岸やアフリカ北部に繁殖し、ヨーロッパアマツバメより淡い色合いが特徴的である。
Western Glossy Swiftlet
A small swiftlet (9-10 cm) found in lowland and hill forests of the Malay Peninsula, Sumatra, and Borneo. Glossy blue-black upperparts with a paler rump. Aerial insectivore, feeding on tiny flying insects. Colonial nester in caves and buildings.