Red-necked Nightjar vs Spotted Nightjar
Caprimulgus ruficollis 比較対象 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Red-necked Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Caprimulgus ruficollis | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 39.6 cm (15.6 in) | 42.7 cm (16.8 in) |
| 体重 | 86.33333333333333 g (3.05 oz) | 102.5 g (3.62 oz) |
| 食性 | Hawks large moths, beetles, and flying insects at night over Iberian and North African scrub … | 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
Red-necked Nightjar
Loud, resonant 'cut-CHER-cut' or 'cotcorotcot'; far-carrying hollow knocking; churring trill between phrases; calls from scrubby Mediterranean habitats at night
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
Red-necked Nightjar
Breeds on the Iberian Peninsula, Morocco, and northwestern Algeria; long-distance migrant wintering in sub-Saharan West Africa from Senegal to Guinea.
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
Red-necked Nightjar
Spotted Nightjar
How to Tell Them Apart
Red-necked Nightjar
Large nightjar; grey-brown mottled above; rufous-orange hindneck collar diagnostic; white throat patch in male; white spots on wing coverts and outer tail in male; buff equivalents in female.
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
Red-necked Nightjar
体重約86gのイベリア半島・北西アフリカで繁殖するヨタカ。赤褐色の首輪が特徴で準絶滅危惧種。
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。