Common Swift vs White-chested Swift
Apus apus เปรียบเทียบกับ Cypseloides lemosi
Side-by-Side Comparison
| คุณสมบัติ | Common Swift | White-chested Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Apus apus | Cypseloides lemosi |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 32.3 cm (12.7 in) | 30.0 cm (11.8 in) |
| น้ำหนัก | 41.5 g (1.46 oz) | 28.400000000000002 g (1.00 oz) |
| อาหาร | Aerial forager on tiny insects and wind-dispersed spiders; forages near water surfaces where insects concentrate. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| จำนวนไข่ | 1-4 | -- |
| Population Trend | — | — |
Habitat Comparison
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Common Swift only
White-chested Swift only
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Song & Call Comparison
Common Swift
Crisp, two-noted call: quick sharp chip followed by descending whistle; distinctive pattern repeated at measured intervals.
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
Common Swift
Breeds across Europe and Asia from the British Isles east to Siberia and China. Long-distance migrant wintering in sub-Saharan Africa.
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
Common Swift
White-chested Swift
How to Tell Them Apart
Common Swift
Uniformly blackish-brown above and below; pale whitish throat patch; slightly forked tail; no other pale markings; sexes identical; the archetypal swift shape with scythe-like wings; widespread Palearctic breeder and Sub-Saharan …
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
Common Swift
A medium-sized swift (16-17 cm, wingspan 42-48 cm) with dark blackish-brown plumage and a pale throat. One of the most aerial of all birds, spending nearly its entire life on the wing, sleeping, eating, and even mating in flight. Breeds across Eurasia; winters in sub-Saharan Africa.
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.