Pallid Swift vs Ridgetop Swiftlet
Apus pallidus 对比 Collocalia isonota
Side-by-Side Comparison
| 属性 | Pallid Swift | Ridgetop Swiftlet |
|---|---|---|
| 学名 | Apus pallidus | Collocalia isonota |
| 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) | 6.483333333333333 g (0.23 oz) |
| 食性 | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Obligate aerial feeder on microscopic flying insects and spiders; highly social forager over tropical forest. |
| 产卵数 | 1-4 | -- |
| 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.
Ridgetop Swiftlet
Thin, high twittering; soft 'chip-chip' over Solomon Islands ridges; echolocation clicks in caves; one of smallest swiftlets; calls barely audible; rapid chittering in flight
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.
Ridgetop Swiftlet
Endemic to the Solomon Islands. Found on Bougainville, Guadalcanal, and other major islands in lowland rainforest.
保护状况
Pallid Swift
Ridgetop 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 …
Ridgetop Swiftlet
Tiny swiftlet; glossy dark blue-green upperparts; pale buff rump band; dark sooty-brown underparts; slightly forked tail; recently described Philippine endemic; differs from congeners primarily in voice and ridge-top ridge habitat.
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。
Ridgetop Swiftlet
山脊金丝燕(Collocalia isonota)是一种体长9-10厘米的小型金丝燕，分布于菲律宾和小巽他群岛的山地地区。深色有光泽羽毛。空中捕食昆虫，在山地地形中筑巢。