White-winged Nightjar vs Spotted Nightjar
Eleothreptus candicans 比較対象 Eurostopodus argus
Side-by-Side Comparison
| 属性 | White-winged Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Eleothreptus candicans | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 30.2 cm (11.9 in) | 42.7 cm (16.8 in) |
| 体重 | 49.666666666666664 g (1.75 oz) | 102.5 g (3.62 oz) |
| 食性 | Catches flying insects in nocturnal aerial sallies over South American savanna and grassland. | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| 一腹卵数 | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-winged Nightjar
Soft, purring 'purrr' from cerrado grassland; low, muffled churring; males perform wing-clapping display producing sharp snapping sounds; vocalizations otherwise quiet
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
White-winged Nightjar
Resident of campo cerrado grassland and open savanna in interior Brazil (Goiás, Mato Grosso do Sul, Minas Gerais); rare and endangered.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
保全状況
White-winged Nightjar
Spotted Nightjar
How to Tell Them Apart
White-winged Nightjar
Male largely white on wings with dark brown body; white wing patches striking in flight; brown crown and back; white tail. Female cryptically mottled brown and buff; lacks white wings …
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
White-winged Nightjar
オスがほぼ白色のヨタカで、ブラジルのセラード草原に生息する。危急種に指定されている。
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。