Forbes-Watson's Swift vs Pallid Swift
Apus berliozi 比較対象 Apus pallidus
Side-by-Side Comparison
| 属性 | Forbes-Watson's Swift | Pallid Swift |
|---|---|---|
| 学名 | Apus berliozi | Apus pallidus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 34.0 cm (13.4 in) | 33.4 cm (13.1 in) |
| 体重 | 43.166666666666664 g (1.52 oz) | 42.25 g (1.49 oz) |
| 食性 | Obligate aerial feeder on small insects and arachnids; catches prey in a wide gape during … | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. |
| 一腹卵数 | 2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Forbes-Watson's Swift
Rapid, buzzy chatter descending at end; rough staccato notes spilling quickly with emphatic final chip before silence.
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Geographic Range & Migration
Forbes-Watson's Swift
Breeds in the Arabian Peninsula and East Africa from Somalia south to Tanzania. Partially migratory; range and taxonomy incompletely understood.
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
保全状況
Forbes-Watson's Swift
Pallid Swift
How to Tell Them Apart
Forbes-Watson's Swift
Dark sooty-brown overall with pale buff throat patch; underparts slightly paler brown; Socotra Island and East African coast species; plumage similar to African Swift but slightly paler throat and restricted …
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
Forbes-Watson's Swift
ベルリョウアマツバメはソマリア周辺の東アフリカに生息する比較的希少なアマツバメである。
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。