Pacific Swift vs White-chested Swift
Apus pacificus verglichen mit Cypseloides lemosi
Side-by-Side Comparison
| Merkmal | Pacific Swift | White-chested Swift |
|---|---|---|
| Wissenschaftlicher Name | Apus pacificus | Cypseloides lemosi |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Apodidae | Apodidae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | — | — |
| Flügelspannweite | 34,6 cm (13.6 in) | 30,0 cm (11.8 in) |
| Gewicht | 41,516666666666666 g (1.46 oz) | 28,400000000000002 g (1.00 oz) |
| Ernährung | Feeds aerially on tiny insects and spiders, often following weather fronts where aerial plankton concentrates. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| Gelegegröße | 1-3 | -- |
| Population Trend | — | — |
Habitat Comparison
Gemeinsame Lebensräume
Pacific Swift only
White-chested Swift only
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Song & Call Comparison
Pacific Swift
Thin, reedy trill with nasal overtone; soft chattering notes delivered continuously during rapid low-level flight over fields.
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
Pacific Swift
Breeds from Siberia and Japan south to China and the Himalayas. Long-distance migrant wintering in Southeast Asia and Australia.
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.
Erhaltungsstatus
Pacific Swift
White-chested Swift
How to Tell Them Apart
Pacific Swift
Dark blackish-brown upperparts; distinctive white rump patch contrasting with dark back; white throat patch; underparts dark with pale brown barring; deeply forked tail; white rump distinguishes it from Common Swift …
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
Pacific Swift
A medium-sized swift (17-18 cm) found across eastern Asia from Siberia to Australia. Dark plumage with a white rump patch and deeply forked tail. Aerial insectivore. A long-distance migrant, breeding in Asia and wintering in Southeast Asia and Australasia.
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.