Forbes-Watson's Swift vs Alpine Swift
Apus berliozi 比較対象 Tachymarptis melba
Side-by-Side Comparison
| 属性 | Forbes-Watson's Swift | Alpine Swift |
|---|---|---|
| 学名 | Apus berliozi | Tachymarptis melba |
| 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) | 43.9 cm (17.3 in) |
| 体重 | 43.166666666666664 g (1.52 oz) | 97.5 g (3.44 oz) |
| 食性 | Obligate aerial feeder on small insects and arachnids; catches prey in a wide gape during … | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 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.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
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.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
保全状況
Forbes-Watson's Swift
Alpine 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 …
Alpine Swift
Large; dark brown upperparts; white throat patch separated from white belly by dark brown breast band; brown flanks; bold tricoloured underpart pattern; one of Europe's largest swifts with distinctive white …
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。
Alpine Swift
アルプスアマツバメはヨーロッパの山岳地帯と岩壁に繁殖し、白い腹と大きな体が特徴的な長距離渡り鳥である。