Plain Nightjar vs Spotted Nightjar
Caprimulgus inornatus 对比 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Plain Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Caprimulgus inornatus | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 30.6 cm (12.0 in) | 42.7 cm (16.8 in) |
| 体重 | 45.75 g (1.61 oz) | 102.5 g (3.62 oz) |
| 食性 | Feeds nocturnally on moths and large beetles in erratic low-level hunting flights over tropical scrub. | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| 产卵数 | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Plain Nightjar
Monotonous churring trill; steady 'churrrrr' from African savanna; calls persistently at night; plain plumage matched by relatively unvaried, repetitive song
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
Geographic Range & Migration
Plain Nightjar
Found from Ethiopia and Somalia south to Kenya and Tanzania. Resident in arid acacia scrub and dry open country. Closely related to Nubian Nightjar.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
保护状况
Plain Nightjar
Spotted Nightjar
How to Tell Them Apart
Plain Nightjar
Uniformly plain sandy-grey upperparts with minimal patterning; faint pale supercilium; small whitish throat spot; underparts pale buff with fine barring; among the least boldly marked nightjars, blending into Sahel scrubland.
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 …
About These Birds
Plain Nightjar
素色夜鹰，体长21–23厘米，分布于非洲萨赫勒地带（塞内加尔至索马里），淡沙色羽毛，游荡性。
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。