Great Dusky Swift vs Philippine Spinetail
Cypseloides senex 比較対象 Mearnsia picina
Side-by-Side Comparison
| 属性 | Great Dusky Swift | Philippine Spinetail |
|---|---|---|
| 学名 | Cypseloides senex | Mearnsia picina |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Near Threatened |
| 体長 | — | — |
| 翼開長 | 33.8 cm (13.3 in) | 32.3 cm (12.7 in) |
| 体重 | 83.0 g (2.93 oz) | 11.5 g (0.41 oz) |
| 食性 | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … | Aerial diet of small flying insects and spiders; forages at speed over forest and open … |
| 一腹卵数 | 1-2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Great Dusky Swift
Loud, churring trill; harsher and louder than other Cypseloides; calls over Iguacu Falls and major Neotropical waterfalls; buzzy 'bzzzt-bzzzt' in aerial groups
Philippine Spinetail
High-pitched, buzzy twittering; sharp 'tsit-tsit' in fast low-level flight over Philippine forest; calls rapidly in tight flocks; distinctive wing sound in fast aerial display
Geographic Range & Migration
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
Philippine Spinetail
Endemic to the Philippines, found on Mindanao and adjacent southern islands. Resident in lowland and hill forest and edge. Uncommon.
保全状況
Great Dusky Swift
Philippine Spinetail
How to Tell Them Apart
Great Dusky Swift
Very large; entirely dark sooty-brown with pale grey forehead and chin scaling; slightly paler underparts; broad wings; largest Cypseloides swift; South American waterfall specialist with dusky uniform plumage and imposing …
Philippine Spinetail
Tiny but long-winged; dark blackish-brown overall; pale grey-white throat and chin; short spiny tail projections visible at close range; Philippine endemic; small size contrasts with proportionally very long scythe-like wings.
About These Birds
Great Dusky Swift
グレートダスキースウィフトはブラジルとアルゼンチンに分布し、大きな滝の周辺で繁殖するアマツバメである。
Philippine Spinetail
フィリピン固有のフィリピンアナツバメ。体長12〜13cm。暗褐色で腰部が淡い。フィリピンの森林や農地上空を飛翔し、小さな昆虫を捕食する。崖や建物に巣を作ることもある。低危険種。