Waterfall Swift vs Alpine Swift
Hydrochous gigas 比較対象 Tachymarptis melba
Side-by-Side Comparison
| 属性 | Waterfall Swift | Alpine Swift |
|---|---|---|
| 学名 | Hydrochous gigas | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 29.2 cm (11.5 in) | 43.9 cm (17.3 in) |
| 体重 | 38.540000000000006 g (1.36 oz) | 97.5 g (3.44 oz) |
| 食性 | Obligate aerial forager; feeds entirely on the wing on small flying insects, midges, and airborne … | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 一腹卵数 | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Waterfall Swift
Rapid, high-pitched twittering; sharp 'tsit-tsit' calls over Southeast Asian waterfalls; thin metallic notes; nest behind waterfalls; calls audible over roaring water
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Waterfall Swift
Found from southern Thailand through the Thai-Malay Peninsula to Sumatra and Borneo. Restricted to rivers near waterfalls. Scarce.
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
Waterfall Swift
Alpine Swift
How to Tell Them Apart
Waterfall Swift
Blackish-brown upperparts with slight gloss; grey-brown underparts paler than back; pale grey-white chin and throat; no rump patch; robust-bodied and large; Southeast Asian waterfall specialist with uniformly dark plumage and …
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
Waterfall Swift
A large swift (16-17 cm) endemic to the Malay Peninsula, Sumatra, and Borneo. Dark plumage. Aerial insectivore, foraging over forested rivers and near waterfalls. Nests behind large waterfalls, where the name derives. One of the least known Asian swifts.
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。