Spotted Nightjar vs Collared Nightjar
Eurostopodus argus مقارنةً بـ Gactornis enarratus
Side-by-Side Comparison
| السمة | Spotted Nightjar | Collared Nightjar |
|---|---|---|
| الاسم العلمي | Eurostopodus argus | Gactornis enarratus |
| الرتبة | Caprimulgiformes | Caprimulgiformes |
| الفصيلة | Caprimulgidae | Caprimulgidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | — |
| طول الجناح | 42,7 cm (16.8 in) | 29,5 cm (11.6 in) |
| الوزن | 102,5 g (3.62 oz) | 52,833333333333336 g (1.86 oz) |
| النظام الغذائي | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Nocturnal aerial insectivore; catches moths and beetles in flight over Malagasy forest and forest edge. |
| عدد البيض في الوضع | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Collared Nightjar
Soft, churring trill; gentle repeated 'trrr-trrr' at moderate pitch; quiet for a nightjar; calls from dense Madagascar forest undergrowth at dusk
Geographic Range & Migration
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
Collared Nightjar
Endemic to Madagascar; resident of moist eastern lowland and montane forest from sea level to 2,000 m.
حالة الحفاظ
Spotted Nightjar
Collared Nightjar
How to Tell Them Apart
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 …
Collared Nightjar
Brown and rufous with dark brown vermiculations; distinctive rufous-orange collar across hindneck diagnostic; pale buff throat; spotted with buff on wing coverts; tail barred brown; Madagascar endemic nightjar.
About These Birds
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.
Collared Nightjar
A small, beautifully patterned Caprimulgidae nightjar (~53 g) endemic to Madagascar. A pale collar separates the dark crown from streaked brown upperparts. Inhabits humid eastern rainforest and dry western woodland. Nocturnal; hunts insects in forest understorey. Seldom encountered; Least Concern on Madagascar.