Slender-tailed Nightjar vs Spotted Nightjar
Caprimulgus clarus 对比 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Slender-tailed Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Caprimulgus clarus | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 29.6 cm (11.7 in) | 42.7 cm (16.8 in) |
| 体重 | 43.0 g (1.52 oz) | 102.5 g (3.62 oz) |
| 食性 | Nocturnal aerial insectivore specialising in large moths and flying beetles, caught in slow erratic hunting … | 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
Slender-tailed Nightjar
Rapid churring trill; 'trrr-trrr' at steady pace; calls from East African dry scrub at night; lighter than Long-tailed Nightjar; alarm a quiet 'chek'
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
Slender-tailed Nightjar
Found from Angola and the DRC south through Zambia and Zimbabwe to South Africa. Resident in woodland and savanna near rocky outcrops.
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
Slender-tailed Nightjar
Spotted Nightjar
How to Tell Them Apart
Slender-tailed Nightjar
Pale brown upperparts with black streaks and buff-white spotting; whitish supercilium; white throat patch; underparts buff barred brown; males have elongated but narrower tail feathers than Long-tailed Nightjar.
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
Slender-tailed Nightjar
细尾夜鹰，体长24–27厘米，分布于东非和南非开阔草地和林地，色调较长尾夜鹰浅。
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。