White-chested Swift vs Cassin's Spinetail
Cypseloides lemosi 比較対象 Neafrapus cassini
Side-by-Side Comparison
| 属性 | White-chested Swift | Cassin's Spinetail |
|---|---|---|
| 学名 | Cypseloides lemosi | Neafrapus cassini |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 30.0 cm (11.8 in) | 31.2 cm (12.3 in) |
| 体重 | 28.400000000000002 g (1.00 oz) | 39.5 g (1.39 oz) |
| 食性 | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. | Catches aerial plankton of small insects and spiders in fast sweeping flight; roosts in rock … |
| 一腹卵数 | -- | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Cassin's Spinetail
Loud, penetrating screech followed by descending chatter; harsh staccato calls echoing through African forest understory.
Geographic Range & Migration
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.
Cassin's Spinetail
Found in Central and East Africa from Cameroon east to Kenya and Tanzania. Resident in lowland rainforest and gallery forest.
保全状況
White-chested Swift
Cassin's Spinetail
How to Tell Them Apart
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 …
Cassin's Spinetail
Medium-large; dark blackish-brown upperparts; white rump patch; pale whitish underparts; very short stubby spinetail; Central African forest species; short rounded tail with spiny tips distinctive; larger and broader-winged than smaller …
About These Birds
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。
Cassin's Spinetail
A medium-sized swift (13-14 cm) of lowland tropical forests from Sierra Leone to Uganda. Dark plumage with a white belly patch. Spine-tipped tail feathers. Aerial insectivore, foraging in rapid, bat-like flight over the forest canopy. Colonial nester in hollow trees.