Grey-rumped Swift vs Alpine Swift
Chaetura cinereiventris so với Tachymarptis melba
Side-by-Side Comparison
| Thuộc Tính | Grey-rumped Swift | Alpine Swift |
|---|---|---|
| Tên Khoa Học | Chaetura cinereiventris | Tachymarptis melba |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 20,9 cm (8.2 in) | 43,9 cm (17.3 in) |
| Khối Lượng | 16,15 g (0.57 oz) | 97,5 g (3.44 oz) |
| Chế Độ Ăn | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| Số Trứng | 2-4 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Grey-rumped Swift
Soft, rippling trill with gentle buzzy overtones; light aerial call carrying a faint liquid quality on calm mornings.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Grey-rumped Swift
Found from Nicaragua south through Central America and northwestern South America to Bolivia and Brazil. Resident in lowland forest and edge.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
Tình Trạng Bảo Tồn
Grey-rumped Swift
Alpine Swift
How to Tell Them Apart
Grey-rumped Swift
Small; dark blackish-brown upperparts; pale grey rump contrasting with dark back; underparts dark grey-brown; short spiny tail; Neotropical species with the grey rump as key field mark; widespread from Caribbean …
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
Grey-rumped Swift
A medium-sized swift (11-12 cm) found in humid forests from Central America to southern Brazil. Dark grey plumage with a contrasting pale grey rump band. Short, spine-tipped tail. Aerial insectivore, foraging over forest canopy. Nests behind waterfalls and in caves.
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.