White-throated Nightjar vs Cayenne Nightjar
Eurostopodus mystacalis 比較対象 Setopagis maculosa
Side-by-Side Comparison
| 属性 | White-throated Nightjar | Cayenne Nightjar |
|---|---|---|
| 学名 | Eurostopodus mystacalis | Setopagis maculosa |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Data Deficient |
| 体長 | — | — |
| 翼開長 | 50.4 cm (19.8 in) | 27.8 cm (10.9 in) |
| 体重 | 138.25 g (4.88 oz) | 47.0 g (1.66 oz) |
| 食性 | Catches large flying insects, especially moths and beetles, in aerial sallies over Australian and Pacific … | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| 一腹卵数 | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
White-throated Nightjar only
Cayenne Nightjar only
None
Song & Call Comparison
White-throated Nightjar
Resonant, churring song; rapid 'good-lord-deliver-us' or 'chaw-chaw-chaw'; low, bubbling trill carrying through rainforest; softer than related species
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
White-throated Nightjar
Resident of open woodland and scrub in eastern and northern Australia; also found on offshore islands and in southern New Guinea.
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
White-throated Nightjar
Cayenne Nightjar
How to Tell Them Apart
White-throated Nightjar
Grey-brown with rufous and black mottling; large bold white throat patch distinctive; no white wing spots or tail markings; well-camouflaged on bark. Male and female similar; one of the larger …
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
White-throated Nightjar
東オーストラリアとニューギニア沿岸に生息するヨタカで、体重138g。白い喉が特徴。
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.