Fernando Po Swift vs White-chested Swift
Apus sladeniae 比較対象 Cypseloides lemosi
Side-by-Side Comparison
| 属性 | Fernando Po Swift | White-chested Swift |
|---|---|---|
| 学名 | Apus sladeniae | Cypseloides lemosi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Data Deficient | Least Concern |
| 体長 | — | — |
| 翼開長 | 35.4 cm (13.9 in) | 30.0 cm (11.8 in) |
| 体重 | 42.0 g (1.48 oz) | 28.400000000000002 g (1.00 oz) |
| 食性 | Aerial insectivore relying entirely on flying insects (midges, gnats, small beetles) and airborne spiders. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 一腹卵数 | 1-2 | -- |
| 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-chested Swift
High, thin twittering; soft 'tsit' calls in flight; calls over Colombian waterfalls; very poorly known; thin, reedy contact notes; one of most rarely documented swifts
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-chested Swift
Known from Colombia and adjacent Ecuador. One of the world's rarest swifts; recorded at waterfalls in humid forest foothills at 500–1,200 m.
保全状況
Fernando Po Swift
White-chested 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-chested Swift
Black upperparts and wings; distinctive large white chest patch contrasting sharply with black throat and belly; white confined to central breast; Colombian endemic with unique bold bicoloured plumage unlike any …
About These Birds
Fernando Po Swift
A medium-sized swift (14-15 cm) found on the island of Bioko (formerly Fernando Po) in the Gulf of Guinea, Equatorial Guinea. Dark plumage. Aerial insectivore. A poorly known, range-restricted species limited to the volcanic island. Very limited ecological data available.
White-chested Swift
コロンビアアマツバメはコロンビア南部に限定的に生息する希少なアマツバメである。