Spotted Nightjar vs Collared Nightjar
Eurostopodus argus 对比 Gactornis enarratus
Side-by-Side Comparison
| 属性 | Spotted Nightjar | Collared Nightjar |
|---|---|---|
| 学名 | Eurostopodus argus | Gactornis enarratus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 42.7 cm (16.8 in) | 29.5 cm (11.6 in) |
| 体重 | 102.5 g (3.62 oz) | 52.833333333333336 g (1.86 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Nocturnal aerial insectivore; catches moths and beetles in flight over Malagasy forest and forest edge. |
| 产卵数 | 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
Collared Nightjar
Soft, churring trill; gentle repeated 'trrr-trrr' at moderate pitch; quiet for a nightjar; calls from dense Madagascar forest undergrowth at dusk
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.
Collared Nightjar
Endemic to Madagascar; resident of moist eastern lowland and montane forest from sea level to 2,000 m.
保护状况
Spotted Nightjar
Collared 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 …
Collared Nightjar
Brown and rufous with dark brown vermiculations; distinctive rufous-orange collar across hindneck diagnostic; pale buff throat; spotted with buff on wing coverts; tail barred brown; Madagascar endemic nightjar.
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。
Collared Nightjar
A small, beautifully patterned Caprimulgidae nightjar (~53 g) endemic to Madagascar. A pale collar separates the dark crown from streaked brown upperparts. Inhabits humid eastern rainforest and dry western woodland. Nocturnal; hunts insects in forest understorey. Seldom encountered; Least Concern on Madagascar.