White-winged Nightjar vs Spotted Nightjar
Eleothreptus candicans مقارنةً بـ Eurostopodus argus
Side-by-Side Comparison
| السمة | White-winged Nightjar | Spotted Nightjar |
|---|---|---|
| الاسم العلمي | Eleothreptus candicans | Eurostopodus argus |
| الرتبة | Caprimulgiformes | Caprimulgiformes |
| الفصيلة | Caprimulgidae | Caprimulgidae |
| حالة الحفاظ | Vulnerable | Least Concern |
| الطول | — | — |
| طول الجناح | 30,2 cm (11.9 in) | 42,7 cm (16.8 in) |
| الوزن | 49,666666666666664 g (1.75 oz) | 102,5 g (3.62 oz) |
| النظام الغذائي | Catches flying insects in nocturnal aerial sallies over South American savanna and grassland. | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| عدد البيض في الوضع | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
الموائل المشتركة
White-winged Nightjar only
بلا
Spotted Nightjar only
Song & Call Comparison
White-winged Nightjar
Soft, purring 'purrr' from cerrado grassland; low, muffled churring; males perform wing-clapping display producing sharp snapping sounds; vocalizations otherwise quiet
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
Geographic Range & Migration
White-winged Nightjar
Resident of campo cerrado grassland and open savanna in interior Brazil (Goiás, Mato Grosso do Sul, Minas Gerais); rare and endangered.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
حالة الحفاظ
White-winged Nightjar
Spotted Nightjar
How to Tell Them Apart
White-winged Nightjar
Male largely white on wings with dark brown body; white wing patches striking in flight; brown crown and back; white tail. Female cryptically mottled brown and buff; lacks white wings …
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
About These Birds
White-winged Nightjar
A small Caprimulgidae nightjar (~50 g) of cerrado grasslands in central South America (Brazil, Bolivia, Paraguay). Males are almost entirely white; females cryptically brown. One of the most distinctive nightjars. Inhabits open grassland with scattered shrubs. Vulnerable from rapid cerrado agricultural conversion.
Spotted Nightjar
A medium Caprimulgidae nightjar (~103 g) of open woodland, spinifex grassland, and rocky ridges across mainland Australia. Intricately spotted and barred brown, grey, and buff. Cryptic by day on the ground among leaf litter. Crepuscular and nocturnal; feeds on flying insects caught in aerial pursuit. Least Concern.