Forbes-Watson's Swift vs White-chested Swift
Apus berliozi 비교 대상 Cypseloides lemosi
Side-by-Side Comparison
| 속성 | Forbes-Watson's Swift | White-chested Swift |
|---|---|---|
| 학명 | Apus berliozi | Cypseloides lemosi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 34.0 cm (13.4 in) | 30.0 cm (11.8 in) |
| 체중 | 43.166666666666664 g (1.52 oz) | 28.400000000000002 g (1.00 oz) |
| 식성 | 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. |
| 산란 수 | 2 | -- |
| Population Trend | — | — |
Habitat Comparison
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.
보전 상태
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
베를리오즈 칼새는 소말리아와 에티오피아 아덴만 연안에 서식하는 칼새입니다. 카보베르데 칼새와 유사하지만 다른 지역에 서식하며, 어두운 깃털과 작은 흰 허리 패치가 특징입니다.
White-chested Swift
14–15 cm의 중형 칼새로 콜롬비아 카우카 상부 계곡 고유종. 흰 가슴 반점이 있는 그을린 흑색 깃털. 아열대림의 공중 곤충식성. 극도로 제한된 분포와 지속적인 서식지 손실로 위기종으로 분류.