Chimney Swift vs Alpine Swift
Chaetura pelagica 比較対象 Tachymarptis melba
Side-by-Side Comparison
| 属性 | Chimney Swift | Alpine Swift |
|---|---|---|
| 学名 | Chaetura pelagica | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 24.9 cm (9.8 in) | 43.9 cm (17.3 in) |
| 体重 | 22.666666666666668 g (0.80 oz) | 97.5 g (3.44 oz) |
| 食性 | Aerial forager on tiny insects and wind-dispersed spiders; forages near water surfaces where insects concentrate. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 一腹卵数 | 2-7 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Chimney Swift
Rapid, liquid twittering with bright cheerful quality; chi-chi-chi staccato notes carrying well across open sky at dusk.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Chimney Swift
Breeds in eastern North America from Canada south to Texas. Long-distance migrant wintering in the upper Amazon basin of Peru and Brazil.
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
Chimney Swift
Alpine Swift
How to Tell Them Apart
Chimney Swift
Small; uniformly dark sooty-grey overall with slightly paler grey throat and chin; no contrasting rump patch; short spiny tail; sexes identical; North American chimney-nesting species famous for its swirling pre-roost …
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
Chimney Swift
北米東部で繁殖し、南米北部で越冬する小型の鳥（体長12〜15cm）。細長い体と鎌型の翼が特徴で、食事・交尾・巣材集め以外はほぼ常に空中を飛び続ける。Chaetura pelagica（アマツバメ）は都市の煙突や中空の木を集団で営巣場所として利用する。「空飛ぶ葉巻」の愛称がある。Apodidae科。
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。