Spotted Nightjar vs Scissor-tailed Nightjar
Eurostopodus argus مقارنةً بـ Hydropsalis torquata
Side-by-Side Comparison
| السمة | Spotted Nightjar | Scissor-tailed Nightjar |
|---|---|---|
| الاسم العلمي | Eurostopodus argus | Hydropsalis torquata |
| الرتبة | Caprimulgiformes | Caprimulgiformes |
| الفصيلة | Caprimulgidae | Caprimulgidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | — |
| طول الجناح | 42,7 cm (16.8 in) | 36,8 cm (14.5 in) |
| الوزن | 102,5 g (3.62 oz) | 54,625 g (1.93 oz) |
| النظام الغذائي | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Catches moths, beetles, and flying insects in aerial sallies at night over South American savanna. |
| عدد البيض في الوضع | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
الموائل المشتركة
Spotted Nightjar only
Scissor-tailed Nightjar only
بلا
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
Scissor-tailed Nightjar
Loud, clear churring 'quurrr'; repetitive at moderate pitch; calls from open cerrado at dusk; males call persistently from prominent perches; alarm a sharp 'chek'
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.
Scissor-tailed Nightjar
Resident of open savanna, cerrado, and scrub from Colombia and Venezuela south through Brazil to Bolivia and northern Argentina.
حالة الحفاظ
Spotted Nightjar
Scissor-tailed 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 …
Scissor-tailed Nightjar
Male with enormously elongated outer tail feathers to 25 cm forming scissors in flight; brown and buff mottled body; white throat; white wing spots. Female brown mottled with normal tail …
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.
Scissor-tailed Nightjar
A medium Caprimulgidae nightjar (~55 g) of open woodland, cerrado, and grassland in eastern and central South America. Males possess spectacularly long scissor-like outer tail feathers. Common around cattle pastures and agricultural land. Feeds on large moths and beetles at night. Least Concern across its broad range.