White-throated Swift vs White-chested Swift
Aeronautes saxatalis 비교 대상 Cypseloides lemosi
Side-by-Side Comparison
| 속성 | White-throated Swift | White-chested Swift |
|---|---|---|
| 학명 | Aeronautes saxatalis | Cypseloides lemosi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 28.1 cm (11.1 in) | 30.0 cm (11.8 in) |
| 체중 | 34.03 g (1.20 oz) | 28.400000000000002 g (1.00 oz) |
| 식성 | Aerial insectivore relying entirely on flying insects (midges, gnats, small beetles) and airborne spiders. | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 산란 수 | 3-6 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-throated Swift
Sharp, whistled notes alternating with buzzy trills; crisp di-di-dit pattern repeated rhythmically during swift soaring flights.
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
White-throated Swift
Found in western North America from British Columbia south through the Rocky Mountains to Central America. Partially migratory northward.
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
White-throated Swift
White-chested Swift
How to Tell Them Apart
White-throated Swift
Black upperparts; bold white throat and white flanks extending to white central underparts; black sides of breast and belly create striking tricoloured pattern; white lateral tail spots; Western North American …
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
White-throated Swift
북미 칼새 중 독특한 흑백 깃털을 가진 중형 칼새(15~17cm). 서부 북미의 협곡 및 암석 지형에 번식하며, 겨울에는 남쪽으로 이동한다. 공중 식충성이다.
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.