White-throated Nightjar vs Cayenne Nightjar
Eurostopodus mystacalis مقارنةً بـ Setopagis maculosa
Side-by-Side Comparison
| السمة | White-throated Nightjar | Cayenne Nightjar |
|---|---|---|
| الاسم العلمي | Eurostopodus mystacalis | Setopagis maculosa |
| الرتبة | Caprimulgiformes | Caprimulgiformes |
| الفصيلة | Caprimulgidae | Caprimulgidae |
| حالة الحفاظ | Least Concern | Data Deficient |
| الطول | — | — |
| طول الجناح | 50,4 cm (19.8 in) | 27,8 cm (10.9 in) |
| الوزن | 138,25 g (4.88 oz) | 47,0 g (1.66 oz) |
| النظام الغذائي | 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. |
| عدد البيض في الوضع | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
الموائل المشتركة
White-throated Nightjar only
Cayenne Nightjar only
بلا
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.
حالة الحفاظ
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
A large Caprimulgidae nightjar (~138 g) of open forest and woodland in eastern Australia and coastal New Guinea. A white throat patch contrasts with cryptic brown-patterned plumage. Roosts on the ground or along branches by day; hunts moths and large beetles at night. Partially migratory in southeast Australia. Least Concern.
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.