Cape Verde Swift vs Alpine Swift
Apus alexandri в сравнении с Tachymarptis melba
Side-by-Side Comparison
| Характеристика | Cape Verde Swift | Alpine Swift |
|---|---|---|
| Научное название | Apus alexandri | Tachymarptis melba |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Apodidae | Apodidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 27,5 cm (10.8 in) | 43,9 cm (17.3 in) |
| Масса | 39,4 g (1.39 oz) | 97,5 g (3.44 oz) |
| Питание | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| Размер кладки | 2 | 1-4 |
| Population Trend | — | — |
Song & Call Comparison
Cape Verde Swift
Soft, musical whistling with smooth melodic quality; clear, unhurried phrases rising and falling gently in warm afternoon air.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Cape Verde Swift
Endemic to the Cape Verde Islands in the eastern Atlantic. Resident on several islands including São Vicente and Santo Antão.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
Охранный статус
Cape Verde Swift
Alpine Swift
How to Tell Them Apart
Cape Verde Swift
Dark sooty-brown overall; pale grey-white throat patch; underparts slightly paler brown; moderately forked tail; Cape Verde Islands endemic; similar to Common Swift but slightly smaller with more extensive pale throat …
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
Cape Verde Swift
A medium-sized swift (13-14 cm) endemic to the Cape Verde Islands in the eastern Atlantic. Dark plumage with a pale throat. Aerial insectivore, foraging over volcanic landscapes and towns. Resident population restricted to the archipelago. Closely related to Common Swift.
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.