Nubian Nightjar vs Spotted Nightjar
Caprimulgus nubicus 比較対象 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Nubian Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Caprimulgus nubicus | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 29.6 cm (11.7 in) | 42.7 cm (16.8 in) |
| 体重 | 54.8 g (1.93 oz) | 102.5 g (3.62 oz) |
| 食性 | Feeds on flying insects at night, mainly moths and beetles, by coursing low over open … | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| 一腹卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Nubian Nightjar
Rapid, churring trill; nasal 'churr-churr' at medium pace; calls from arid African scrub and rocky desert at night; alarm a sharp 'chek'; calls mostly near water
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
Nubian Nightjar
Found in a disjunct range across the Middle East and northeastern Africa including Israel, Egypt, Sudan, and Somalia. Resident in rocky desert.
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
Nubian Nightjar
Spotted Nightjar
How to Tell Them Apart
Nubian Nightjar
Richly patterned rufous-buff and dark brown upperparts; prominent tawny-orange nuchal collar; white throat patch; males have white spots on primary tips; overall warmer tones than most African nightjars.
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
Nubian Nightjar
体長20〜22cmのアフリカの角・アラビア半島の淡い砂褐色のヨタカ。分布域が限られた準絶滅危惧種。
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。