Whitehead's Swiftlet vs Pallid Swift
Aerodramus whiteheadi 对比 Apus pallidus
Side-by-Side Comparison
| 属性 | Whitehead's Swiftlet | Pallid Swift |
|---|---|---|
| 学名 | Aerodramus whiteheadi | Apus pallidus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Data Deficient | Least Concern |
| 体长 | — | — |
| 翼展 | 27.2 cm (10.7 in) | 33.4 cm (13.1 in) |
| 体重 | 14.0 g (0.49 oz) | 42.25 g (1.49 oz) |
| 食性 | Aerial plankton feeder taking tiny midges, fungus gnats, and ballooning spiders in rapid coursing flights. | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. |
| 产卵数 | -- | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Whitehead's Swiftlet
Thin twittering; 'chip-chip' calls over Borneo highlands; echolocation clicks in cave roosts; data deficient; calls poorly documented from remote Bornean montane habitat
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Geographic Range & Migration
Whitehead's Swiftlet
Endemic to the highlands of Borneo at 800–3,000 m. Resident in montane forest on Mount Kinabalu and the Crocker Range.
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
保护状况
Whitehead's Swiftlet
Pallid Swift
How to Tell Them Apart
Whitehead's Swiftlet
Small; dark brownish-grey upperparts; pale buff-grey rump band; underparts pale grey-white; forked tail; Philippine endemic from Luzon; data-deficient species differing from Philippine Swiftlet mainly in habitat preference and island range.
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 …
About These Birds
Whitehead's Swiftlet
一种小型金丝燕（体长11-12厘米），特产于菲律宾吕宋岛北部山区。体羽深色，腰部浅色。属雨燕科（Apodidae），是菲律宾山地的特有种。
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。