Spotted Nightjar vs Bahian Nighthawk
Eurostopodus argus 比較対象 Nyctiprogne vielliardi
Side-by-Side Comparison
| 属性 | Spotted Nightjar | Bahian Nighthawk |
|---|---|---|
| 学名 | Eurostopodus argus | Nyctiprogne vielliardi |
| 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) | 25.4 cm (10.0 in) |
| 体重 | 102.5 g (3.62 oz) | 41.0 g (1.45 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Aerial insectivore foraging over Brazilian rocky rivers and adjacent savanna; poorly known. |
| 一腹卵数 | 1 | 2 |
| 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
Bahian Nighthawk
Thin, buzzy trilling call over Brazilian rivers; high-pitched 'tzeee-tzeee' series; calls in low flight over water; similar to Band-tailed but higher and sharper
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.
Bahian Nighthawk
Endemic to northeastern Brazil (Bahia state); resident of open woodland and gallery forest along rivers; rare and localised.
保全状況
Spotted Nightjar
Bahian Nighthawk
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 …
Bahian Nighthawk
Dark brown with buff and rufous speckles above; pale buff below with brown barring; white tail band; male with white throat patch; no white wing bar; recently described species from …
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。
Bahian Nighthawk
A small Caprimulgidae nighthawk (~41 g) of the São Francisco River valley in the state of Bahia, Brazil. Closely related to the Band-tailed Nighthawk; restricted to riverine habitats with open sandy banks. Roosts and forages near rocky rivers. Diet consists of small flying insects. Least Concern.