Ashy-tailed Swift vs White-chested Swift
Chaetura andrei เปรียบเทียบกับ Cypseloides lemosi
Side-by-Side Comparison
| คุณสมบัติ | Ashy-tailed Swift | White-chested Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Chaetura andrei | Cypseloides lemosi |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Vulnerable | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 22.3 cm (8.8 in) | 30.0 cm (11.8 in) |
| น้ำหนัก | 17.1 g (0.60 oz) | 28.400000000000002 g (1.00 oz) |
| อาหาร | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| จำนวนไข่ | -- | -- |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
ไม่มี
Ashy-tailed Swift only
ไม่มี
White-chested Swift only
Song & Call Comparison
Ashy-tailed Swift
Dry rattling chatter with sharp staccato onset; brief bursts of clicking notes followed by descending hissing sound.
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
Ashy-tailed Swift
Found in eastern Brazil, Bolivia, Paraguay, and northern Argentina. Partially migratory; moves north in austral winter. Lowland forest.
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.
สถานะการอนุรักษ์
Ashy-tailed Swift
White-chested Swift
How to Tell Them Apart
Ashy-tailed Swift
Small; dark sooty-brown overall; distinctly pale ashy-grey rump and tail contrasting with dark body; underparts dark grey-brown; ashy rump and tail the defining feature separating it from other South American …
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
Ashy-tailed Swift
A small swift (11-12 cm) of lowland forests in Venezuela, the Guianas, and Trinidad, with a separate population in southeastern Brazil. Dark plumage with an ashy-grey rump and undertail. Spine-tipped tail. Aerial insectivore. Nests in hollow palms and chimneys.
White-chested Swift
A medium-sized swift (14-15 cm) endemic to the upper Cauca Valley of Colombia. Sooty-black plumage with a white breast patch. Aerial insectivore of subtropical forests. Classified as Endangered due to extremely restricted range and ongoing habitat loss.