Marquesas Swiftlet vs White-chested Swift
Aerodramus ocistus 对比 Cypseloides lemosi
Side-by-Side Comparison
| 属性 | Marquesas Swiftlet | White-chested Swift |
|---|---|---|
| 学名 | Aerodramus ocistus | Cypseloides lemosi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Not Evaluated | Least Concern |
| 体长 | — | — |
| 翼展 | — | 30.0 cm (11.8 in) |
| 体重 | 9.5 g (0.34 oz) | 28.400000000000002 g (1.00 oz) |
| 食性 | Entirely aerial diet of tiny insects and spiders; forages in large flocks over open country … | Obligate aerial forager catching small flies, aphids, winged termites, and airborne spiders on the wing. |
| 产卵数 | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Marquesas Swiftlet
High thin twittering; 'chip-chip' over Marquesas Islands; echolocation clicks in cave roosts; poorly documented; thin high-pitched calls typical of small Pacific swiftlets
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
Marquesas Swiftlet
Endemic to the Marquesas Islands of French Polynesia. Resident on major islands including Nuku Hiva and Hiva Oa. Nests in sea caves.
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.
保护状况
Marquesas Swiftlet
White-chested Swift
How to Tell Them Apart
Marquesas Swiftlet
Small; dark brownish-grey upperparts; pale buff-grey rump band; underparts pale grey-white; forked tail; Marquesas Islands endemic in French Polynesia; closely related to Polynesian Swiftlet but isolated on its own archipelago.
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
Marquesas Swiftlet
一种小型金丝燕（体长10-11厘米），特产于法属波利尼西亚马克萨斯群岛。体羽深色。属雨燕科（Apodidae），是该偏远太平洋岛群的特有种。
White-chested Swift
哥伦比亚雨燕限于哥伦比亚南部，是罕见的雨燕。