Grey-rumped Swift vs Alpine Swift
Chaetura cinereiventris 比較対象 Tachymarptis melba
Side-by-Side Comparison
| 属性 | Grey-rumped Swift | Alpine Swift |
|---|---|---|
| 学名 | Chaetura cinereiventris | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 20.9 cm (8.2 in) | 43.9 cm (17.3 in) |
| 体重 | 16.15 g (0.57 oz) | 97.5 g (3.44 oz) |
| 食性 | 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 … |
| 一腹卵数 | 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.
保全状況
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
中米から南ブラジルの湿潤林に生息する中型アマツバメ（11〜12 cm）。対照的な淡い灰色の腰帯を持つ暗灰色の羽衣。短い棘状の尾。空中で昆虫を捕食。
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。