Forbes-Watson's Swift vs White-chested Swift
Apus berliozi в сравнении с Cypseloides lemosi
Side-by-Side Comparison
| Характеристика | Forbes-Watson's Swift | White-chested Swift |
|---|---|---|
| Научное название | Apus berliozi | Cypseloides lemosi |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Apodidae | Apodidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 34,0 cm (13.4 in) | 30,0 cm (11.8 in) |
| Масса | 43,166666666666664 g (1.52 oz) | 28,400000000000002 g (1.00 oz) |
| Питание | Obligate aerial feeder on small insects and arachnids; catches prey in a wide gape during … | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| Размер кладки | 2 | -- |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Forbes-Watson's Swift only
White-chested Swift only
Song & Call Comparison
Forbes-Watson's Swift
Rapid, buzzy chatter descending at end; rough staccato notes spilling quickly with emphatic final chip before silence.
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
Forbes-Watson's Swift
Breeds in the Arabian Peninsula and East Africa from Somalia south to Tanzania. Partially migratory; range and taxonomy incompletely understood.
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.
Охранный статус
Forbes-Watson's Swift
White-chested Swift
How to Tell Them Apart
Forbes-Watson's Swift
Dark sooty-brown overall with pale buff throat patch; underparts slightly paler brown; Socotra Island and East African coast species; plumage similar to African Swift but slightly paler throat and restricted …
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
Forbes-Watson's Swift
A medium-sized swift (16-17 cm) found in arid coastal regions from the Horn of Africa to the Arabian Peninsula and northwestern Indian Ocean islands. Pale brown plumage with a large white throat patch. Aerial insectivore. Named after the German zoologist Rudolf Berlioz.
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.