Spotted Nightjar vs New Caledonian Nightjar
Eurostopodus argus 对比 Eurostopodus exul
Side-by-Side Comparison
| 属性 | Spotted Nightjar | New Caledonian Nightjar |
|---|---|---|
| 学名 | Eurostopodus argus | Eurostopodus exul |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | 42.7 cm (16.8 in) | 36.4 cm (14.3 in) |
| 体重 | 102.5 g (3.62 oz) | 77.0 g (2.72 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Feeds on flying insects caught in aerial pursuit at night; extinct in New Caledonia, diet … |
| 产卵数 | 1 | -- |
| 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
New Caledonian Nightjar
Poorly documented calls; presumed churring nocturnal song similar to congeners; deep resonant trilling at low pitch; vocalizations essentially unknown
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.
New Caledonian Nightjar
Formerly endemic to New Caledonia; known from historical records only; possibly extinct, last confirmed late 19th century.
保护状况
Spotted Nightjar
New Caledonian 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 …
New Caledonian Nightjar
Brown and grey mottled with buff and dark vermiculations; whitish-buff throat patch; fine pale shaft streaks on crown; no white in wings or tail; known from very few specimens; New …
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。
New Caledonian Nightjar
小型夜鹰（约77克），新喀里多尼亚特有种。仅知于极少数标本；可能已灭绝。