Spotted Nightjar vs Roraiman Nightjar
Eurostopodus argus 对比 Setopagis whitelyi
Side-by-Side Comparison
| 属性 | Spotted Nightjar | Roraiman Nightjar |
|---|---|---|
| 学名 | Eurostopodus argus | Setopagis whitelyi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 42.7 cm (16.8 in) | 31.1 cm (12.2 in) |
| 体重 | 102.5 g (3.62 oz) | 40.75 g (1.44 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Nocturnal aerial insectivore; hawks insects over Tepui highland forest and savanna of Venezuela and Guyana. |
| 产卵数 | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
Roraiman Nightjar
Churring phrases at moderate pace; rasping trill from tepui scrub and forest edges; slightly deeper than Little Nightjar; calls at dusk from rocky highland terrain
Geographic Range & Migration
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
Roraiman Nightjar
Endemic to the Roraima highlands of Venezuela and adjacent northwestern Brazil (Gran Sabana and tepuis), above 1,000 m.
保护状况
Spotted Nightjar
Roraiman Nightjar
How to Tell Them Apart
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
Roraiman Nightjar
Warm rufous-brown and dark brown mottled above; pale buff below with dark barring; white throat patch in male; white outer tail spots in male; buff throat in female; tepui highlands …
About These Birds
Spotted Nightjar
中型夜鹰（约103克）。栖息于澳大利亚大陆的开阔林地和纺锤草草地。无危。
Roraiman Nightjar
A small Caprimulgidae nightjar (~41 g) restricted to the tepui highlands of Venezuela, Guyana, and adjacent Brazil, typically above 1,000 m. Named for Mount Roraima. Cryptic brown-patterned plumage. Nocturnal aerial insectivore. Inhabits rocky scrub and forest edges at elevation. Least Concern in its remote tepui range.