Waterfall Swift vs White-collared Swift
Hydrochous gigas в сравнении с Streptoprocne zonaris
Side-by-Side Comparison
| Характеристика | Waterfall Swift | White-collared Swift |
|---|---|---|
| Научное название | Hydrochous gigas | Streptoprocne zonaris |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Apodidae | Apodidae |
| Охранный статус | Near Threatened | Least Concern |
| Длина | — | — |
| Размах крыльев | 29,2 cm (11.5 in) | 42,5 cm (16.7 in) |
| Масса | 38,540000000000006 g (1.36 oz) | 106,45 g (3.75 oz) |
| Питание | Obligate aerial forager; feeds entirely on the wing on small flying insects, midges, and airborne … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| Размер кладки | 1 | 2 |
| 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
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
Geographic Range & Migration
Waterfall Swift
Found from southern Thailand through the Thai-Malay Peninsula to Sumatra and Borneo. Restricted to rivers near waterfalls. Scarce.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
Охранный статус
Waterfall Swift
White-collared 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 …
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
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.
White-collared Swift
A very large swift (20-22 cm, wingspan 45-55 cm) with a bold white collar band, the largest New World swift. Found from Mexico to southern Brazil and the Caribbean. Aerial insectivore, foraging in large, noisy flocks over forests and cities. Nests behind waterfalls and in caves.