Sykes's Nightjar vs Archbold's Nightjar
Caprimulgus mahrattensis 比較対象 Eurostopodus archboldi
Side-by-Side Comparison
| 属性 | Sykes's Nightjar | Archbold's Nightjar |
|---|---|---|
| 学名 | Caprimulgus mahrattensis | Eurostopodus archboldi |
| 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) | 41.0 cm (16.1 in) |
| 体重 | 57.0 g (2.01 oz) | 77.0 g (2.72 oz) |
| 食性 | Crepuscular and nocturnal insectivore; forages by sight for moths and large flying beetles above humid … | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| 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
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
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.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
保全状況
Sykes's Nightjar
Archbold's 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.
Archbold's Nightjar
Brown and dark grey with rufous-buff vermiculations; whitish throat patch; pale buff supercilium contrasts with darker crown; no white wing or tail patches; tail barred; New Guinea highlands; few records.
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。
Archbold's Nightjar
ニューギニアの亜高山帯に生息するヨタカで、探検家リチャード・アーチボルドにちなんで命名された。