Rufous-cheeked Nightjar vs Spotted Nightjar
Caprimulgus rufigena 比較対象 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Rufous-cheeked Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Caprimulgus rufigena | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 32.1 cm (12.6 in) | 42.7 cm (16.8 in) |
| 体重 | 54.68333333333334 g (1.93 oz) | 102.5 g (3.62 oz) |
| 食性 | Nocturnal aerial insectivore; catches moths, crickets, and beetles in sustained low-altitude hunting flights. | 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
共通生息地
None
Rufous-cheeked Nightjar only
Spotted Nightjar only
Song & Call Comparison
Rufous-cheeked Nightjar
Rapid churring trill interspersed with 'chook' notes; churring 'rrr-chook-rrr-chook' pattern; calls from southern African woodland at night; distinctive interrupted rhythm
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
Rufous-cheeked Nightjar
Breeds in southern Africa from Namibia to South Africa. Partially migratory, moving north in austral winter. Found in dry woodland and savanna.
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
Rufous-cheeked Nightjar
Spotted Nightjar
How to Tell Them Apart
Rufous-cheeked Nightjar
Cryptic brown-grey upperparts with bold black streaks; distinctive warm rufous-cinnamon cheek patch; white throat patch; males show white outer tail corners absent in females.
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
Rufous-cheeked Nightjar
体長23〜25cmの赤褐色の頬斑を持つヨタカ。東・南アフリカの乾燥したサバンナに生息し、アフリカ内で渡りを行う。
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。