Fernando Po Swift vs White-collared Swift
Apus sladeniae 비교 대상 Streptoprocne zonaris
Side-by-Side Comparison
| 속성 | Fernando Po Swift | White-collared Swift |
|---|---|---|
| 학명 | Apus sladeniae | Streptoprocne zonaris |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Data Deficient | Least Concern |
| 체장 | — | — |
| 날개 폭 | 35.4 cm (13.9 in) | 42.5 cm (16.7 in) |
| 체중 | 42.0 g (1.48 oz) | 106.45 g (3.75 oz) |
| 식성 | Aerial insectivore relying entirely on flying insects (midges, gnats, small beetles) and airborne spiders. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 산란 수 | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Fernando Po Swift
Deep, resonant wingbeat audible alongside soft chips; quiet churring call barely distinguishable from surrounding ambient sounds.
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
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.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
보전 상태
Fernando Po Swift
White-collared 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.
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
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.
White-collared Swift
A very large swift (20-22 cm, wingspan 45-55 cm) with a bold white collar band, the largest New World swift. Found from Mexico to southern Brazil and the Caribbean. Aerial insectivore, foraging in large, noisy flocks over forests and cities. Nests behind waterfalls and in caves.