Bates's Swift vs White-chested Swift
Apus batesi so với Cypseloides lemosi
Side-by-Side Comparison
| Thuộc Tính | Bates's Swift | White-chested Swift |
|---|---|---|
| Tên Khoa Học | Apus batesi | Cypseloides lemosi |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 24,6 cm (9.7 in) | 30,0 cm (11.8 in) |
| Khối Lượng | 22,1 g (0.78 oz) | 28,400000000000002 g (1.00 oz) |
| Chế Độ Ăn | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| Số Trứng | 2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bates's Swift
Rapid, light twittering with bright crystalline quality; cascading series of high pure notes tumbling freely in open air.
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
Bates's Swift
Found in a restricted range in West and Central Africa from Cameroon and Gabon. Resident in lowland rainforest. Rare and poorly known.
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.
Tình Trạng Bảo Tồn
Bates's Swift
White-chested Swift
How to Tell Them Apart
Bates's Swift
Small; dark sooty-brown overall; narrow pale greyish-white rump band; pale greyish chin; underparts dark brown; forked tail; West African forest species; the narrowest and dullest rump band among African white-rumped …
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
Bates's Swift
A medium-sized swift (16-17 cm) found in lowland and montane forests of West and Central Africa. Dark plumage with a greenish gloss. Aerial insectivore. Colonial breeder. One of the least known African swifts due to its forest habitat. Named after George Latimer Bates.
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.