Spotted Nightjar vs White-throated Nightjar
Eurostopodus argus 比較対象 Eurostopodus mystacalis
Side-by-Side Comparison
| 属性 | Spotted Nightjar | White-throated Nightjar |
|---|---|---|
| 学名 | Eurostopodus argus | Eurostopodus mystacalis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 42.7 cm (16.8 in) | 50.4 cm (19.8 in) |
| 体重 | 102.5 g (3.62 oz) | 138.25 g (4.88 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Catches large flying insects, especially moths and beetles, in aerial sallies over Australian and Pacific … |
| 一腹卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Spotted Nightjar only
None
White-throated Nightjar only
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
White-throated Nightjar
Resonant, churring song; rapid 'good-lord-deliver-us' or 'chaw-chaw-chaw'; low, bubbling trill carrying through rainforest; softer than related species
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.
White-throated Nightjar
Resident of open woodland and scrub in eastern and northern Australia; also found on offshore islands and in southern New Guinea.
保全状況
Spotted Nightjar
White-throated 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 …
White-throated Nightjar
Grey-brown with rufous and black mottling; large bold white throat patch distinctive; no white wing spots or tail markings; well-camouflaged on bark. Male and female similar; one of the larger …
About These Birds
Spotted Nightjar
オーストラリア本土のスピニフェックス草原に生息するヨタカで、体重103g。
White-throated Nightjar
東オーストラリアとニューギニア沿岸に生息するヨタカで、体重138g。白い喉が特徴。