Standard-winged Nightjar vs Spotted Nightjar
Caprimulgus longipennis 比較対象 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Standard-winged Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Caprimulgus longipennis | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 34.6 cm (13.6 in) | 42.7 cm (16.8 in) |
| 体重 | 48.5 g (1.71 oz) | 102.5 g (3.62 oz) |
| 食性 | Nocturnal moth and beetle specialist; hunts in sustained low flight over dry open country and … | 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
Standard-winged Nightjar
Churring 'chrrr' from West African woodland; male performs display flight with elongated wing feathers; calls from open savanna; alarm a quiet 'chek'
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
Standard-winged Nightjar
Breeds in central and southern Africa from Angola south to South Africa. Intra-African migrant; moves north in austral winter through miombo woodland.
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
Standard-winged Nightjar
Spotted Nightjar
How to Tell Them Apart
Standard-winged Nightjar
Brown and black cryptic upperparts; white throat patch; breeding males develop extraordinary elongated inner primaries as feather-flag standards up to 38 cm with small terminal vane; among Africa's most spectacular …
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
Standard-winged Nightjar
体長22〜28cmの西・中央アフリカの湿潤なサバンナに生息するヨタカ。繁殖期の雄は最長38cmに及ぶ初列風切羽を持つ。
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。