Sykes's Nightjar vs Cayenne Nightjar
Caprimulgus mahrattensis 比較対象 Setopagis maculosa
Side-by-Side Comparison
| 属性 | Sykes's Nightjar | Cayenne Nightjar |
|---|---|---|
| 学名 | Caprimulgus mahrattensis | Setopagis maculosa |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Data Deficient |
| 体長 | — | — |
| 翼開長 | 33.9 cm (13.3 in) | 27.8 cm (10.9 in) |
| 体重 | 57.0 g (2.01 oz) | 47.0 g (1.66 oz) |
| 食性 | Crepuscular and nocturnal insectivore; forages by sight for moths and large flying beetles above humid … | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| 一腹卵数 | 2 | 1-2 |
| 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
Cayenne Nightjar
Poorly known vocalizations; presumed churring trill based on genus; extremely rare recordings; distinct from other Setopagis by subtle tonal and rhythm differences
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.
Cayenne Nightjar
Known from a few specimens from French Guiana; possibly a rare resident of coastal forest and scrub; poorly known.
保全状況
Sykes's Nightjar
Cayenne 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.
Cayenne Nightjar
Brown and buff mottled above with dark vermiculations; pale buff below with darker barring; white throat patch in male; outer tail spots white; data deficient; known from only a handful …
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。
Cayenne Nightjar
A small Caprimulgidae nightjar (~47 g) from coastal French Guiana and adjacent Suriname. Known from only a handful of specimens; biology essentially unknown. Mottled brown plumage presumed cryptic in leaf litter. Presumed nocturnal insectivore. Data Deficient due to extreme rarity of confirmed records in the wild.