Waterfall Swift vs Alpine Swift
Hydrochous gigas comparado con Tachymarptis melba
Side-by-Side Comparison
| Atributo | Waterfall Swift | Alpine Swift |
|---|---|---|
| Nombre científico | Hydrochous gigas | Tachymarptis melba |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Near Threatened | Least Concern |
| Longitud | — | — |
| Envergadura | 29,2 cm (11.5 in) | 43,9 cm (17.3 in) |
| Peso | 38,540000000000006 g (1.36 oz) | 97,5 g (3.44 oz) |
| Dieta | 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 … |
| Tamaño de la puesta | 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.
Estado de conservación
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
El vencejo gigante del Himalaya es el vencejo más grande del mundo, que habita en gargantas montañosas del sur y sureste de Asia, donde forrajea en vuelo.
Alpine Swift
A large swift (20-22 cm, wingspan 54-60 cm) with a white belly and throat contrasting with dark brown upperparts. Found from southern Europe and Africa to Central Asia. Aerial insectivore, foraging at great heights. Nests on cliff faces in large colonies. Powerful, fast flier.