Spotted Nightjar vs Spot-tailed Nightjar
Eurostopodus argus comparado com Hydropsalis maculicaudus
Side-by-Side Comparison
| Atributo | Spotted Nightjar | Spot-tailed Nightjar |
|---|---|---|
| Nome científico | Eurostopodus argus | Hydropsalis maculicaudus |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Caprimulgidae | Caprimulgidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 42,7 cm (16.8 in) | 25,8 cm (10.2 in) |
| Peso | 102,5 g (3.62 oz) | 32,125 g (1.13 oz) |
| Dieta | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Catches flying insects in nocturnal aerial pursuit over Central and South American grassland. |
| Tamanho da postura | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Spotted Nightjar only
Spot-tailed Nightjar only
Nenhum
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
Spot-tailed Nightjar
Soft, rhythmic churring; gentle 'trrr-trrr' from humid grassland; calls low from ground; quieter than most nightjars; alarm a subtle 'chek'; small and inconspicuous
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.
Spot-tailed Nightjar
Resident of open cerrado, scrub, and forest edge in interior South America from Venezuela and the Guianas south to Bolivia, Brazil, and Paraguay.
Estado de conservação
Spotted Nightjar
Spot-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 …
Spot-tailed Nightjar
Small; brown and buff mottled above; pale buff below with dark barring; white throat in male; distinctive white spots on rounded tail distinguishing it from similar Hydropsalis; buff throat in …
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.
Spot-tailed Nightjar
O bacurau-de-rabo-maculado é um bacurau noturno de pequeno porte encontrado em campos e savanas da América do Sul tropical, com padrão maculado na cauda.