Fernando Po Swift vs Alpine Swift
Apus sladeniae 비교 대상 Tachymarptis melba
Side-by-Side Comparison
| 속성 | Fernando Po Swift | Alpine Swift |
|---|---|---|
| 학명 | Apus sladeniae | Tachymarptis melba |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Data Deficient | Least Concern |
| 체장 | — | — |
| 날개 폭 | 35.4 cm (13.9 in) | 43.9 cm (17.3 in) |
| 체중 | 42.0 g (1.48 oz) | 97.5 g (3.44 oz) |
| 식성 | Aerial insectivore relying entirely on flying insects (midges, gnats, small beetles) and airborne spiders. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 산란 수 | 1-2 | 1-4 |
| Population Trend | — | — |
Song & Call Comparison
Fernando Po Swift
Deep, resonant wingbeat audible alongside soft chips; quiet churring call barely distinguishable from surrounding ambient sounds.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Fernando Po Swift
Found on Bioko Island in the Gulf of Guinea and adjacent Cameroon highlands. Restricted to mountain forests and highland areas.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
보전 상태
Fernando Po Swift
Alpine Swift
How to Tell Them Apart
Fernando Po Swift
Dark sooty-brown overall; pale greyish throat and chin patch; underparts slightly paler; broadly similar to African Swift; data-deficient Bioko Island endemic; plumage details poorly documented from limited specimens.
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
Fernando Po Swift
슬레이든 칼새는 기니만의 섬들에 서식하는 칼새입니다. 아프리카 칼새와 유사하지만 더 작고 흰 목 패치가 특징입니다. 해안 절벽과 바위 섬에서 번식합니다.
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.