Swamp Nightjar vs Spotted Nightjar
Caprimulgus natalensis в сравнении с Eurostopodus argus
Side-by-Side Comparison
| Характеристика | Swamp Nightjar | Spotted Nightjar |
|---|---|---|
| Научное название | Caprimulgus natalensis | Eurostopodus argus |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Caprimulgidae | Caprimulgidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 30,6 cm (12.0 in) | 42,7 cm (16.8 in) |
| Масса | 76,3 g (2.69 oz) | 102,5 g (3.62 oz) |
| Питание | Night-active aerial insectivore catching moths, beetles, and grasshoppers in sustained low-altitude hunting flights. | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| Размер кладки | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Swamp Nightjar only
Spotted Nightjar only
Song & Call Comparison
Swamp Nightjar
Mellow churring trill; softer 'frog-like' chrrr from wetland margins; calls from papyrus and reed beds in Africa; lower and rounder than dryland nightjars
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
Swamp Nightjar
Known from a single wing found in Ethiopia's Nechisar National Park. Possibly extinct; range and taxonomy uncertain. Critically 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.
Охранный статус
Swamp Nightjar
Spotted Nightjar
How to Tell Them Apart
Swamp Nightjar
Relatively large; dark brown upperparts with heavy blackish streaking and pale buff spotting; broad white throat patch; underparts barred buff and dark brown; often shows paler underpart ground colour than …
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
Swamp Nightjar
A medium-sized nightjar (23-24 cm) found in moist grasslands, marshes, and vleis across sub-Saharan Africa. Warm brown plumage with distinctive white throat patches. Nocturnal insectivore that roosts on the ground in tall grass. Resident, locally nomadic during dry seasons.
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.