White-naped Swift vs Alpine Swift
Streptoprocne semicollaris 比較対象 Tachymarptis melba
Side-by-Side Comparison
| 属性 | White-naped Swift | Alpine Swift |
|---|---|---|
| 学名 | Streptoprocne semicollaris | Tachymarptis melba |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 44.4 cm (17.5 in) | 43.9 cm (17.3 in) |
| 体重 | 175.0 g (6.17 oz) | 97.5 g (3.44 oz) |
| 食性 | Exclusively aerial insectivore catching small flying insects and spiders drifting in aerial plankton at altitude. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 一腹卵数 | 2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-naped Swift
Very loud screaming trill; deep, powerful 'shreee' from Mexico's largest swift; calls over cliffs and canyons; impressive volume; deeper than White-collared Swift
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
White-naped Swift
Endemic to Mexico from Nayarit south to Oaxaca. Found in montane forest and canyons at 1,000–3,000 m. Nests behind waterfalls.
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
White-naped Swift
Alpine Swift
How to Tell Them Apart
White-naped Swift
Very large; entirely black with white patch restricted to nape only, not forming a full collar; large square tail; Mexican endemic and the largest swift in Middle America; white nape …
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
White-naped Swift
ホワイトナペドスウィフトはメキシコの山岳地帯に生息し、首の白い帯が特徴的なアマツバメである。
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。