Pallid Swift vs Western Glossy Swiftlet
Apus pallidus 对比 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 |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | 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. |
| 产卵数 | 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.
保护状况
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
淡色雨燕在地中海沿岸和北非繁殖，颜色比普通雨燕更淡。
Western Glossy Swiftlet
西部光背雨燕(Collocalia affinis)是一种体长9-10厘米的小型金丝燕，分布于马来半岛、苏门答腊和婆罗洲的低地和丘陵森林。上体具蓝黑光泽。空中捕食昆虫，在洞穴或岩壁上用唾液筑巢。