Sykes's Nightjar vs Papuan Nightjar
Caprimulgus mahrattensis 比較対象 Eurostopodus papuensis
Side-by-Side Comparison
| 属性 | Sykes's Nightjar | Papuan Nightjar |
|---|---|---|
| 学名 | Caprimulgus mahrattensis | Eurostopodus papuensis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 33.9 cm (13.3 in) | 37.9 cm (14.9 in) |
| 体重 | 57.0 g (2.01 oz) | 80.5 g (2.84 oz) |
| 食性 | Crepuscular and nocturnal insectivore; forages by sight for moths and large flying beetles above humid … | Hawks large flying insects, especially moths, at night over Papuan forest and savanna. |
| 一腹卵数 | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Sykes's Nightjar
Churring trill with hollow 'chuck' interspersed; 'chuck-churr' pattern; calls from Pakistani desert scrub at night; calls during moonlit nights from sandy ground
Papuan Nightjar
Churring, repetitive nocturnal call; soft bubbling trill; melodic series of hollow notes; calls from low perch or ground in New Guinea lowland forest
Geographic Range & Migration
Sykes's Nightjar
Found in Pakistan, northwestern India, and adjacent Iran and Afghanistan. Resident in dry scrub, rocky hillsides, and semi-desert plains.
Papuan Nightjar
Resident of savanna woodland, grass, and scrub in lowland New Guinea (Papua, Indonesia and Papua New Guinea).
保全状況
Sykes's Nightjar
Papuan Nightjar
How to Tell Them Apart
Sykes's Nightjar
Pale greyish-brown upperparts with intricate black-brown shaft streaks and pale buff freckling; whitish chin bar; underparts buff with sparse brown barring; resembles Egyptian but greyer overall.
Papuan Nightjar
Dark grey-brown finely vermiculated with buff and black; pale buff and rufous throat patch; pale supercilium; no white wing patches; tail barred brown and buff; cryptically patterned bark-mimicking plumage.
About These Birds
Sykes's Nightjar
体長23cmの小型で淡色のヨタカ。イランからパキスタン・インド西部の砂地砂漠に生息する。
Papuan Nightjar
ニューギニア南部の低地に生息するヨタカで、体重81g。