Vogelkop Owlet-nightjar vs Australian Owlet-nightjar
Aegotheles affinis 比較対象 Aegotheles cristatus
Side-by-Side Comparison
| 属性 | Vogelkop Owlet-nightjar | Australian Owlet-nightjar |
|---|---|---|
| 学名 | Aegotheles affinis | Aegotheles cristatus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Aegothelidae | Aegothelidae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 26.7 cm (10.5 in) | 27.2 cm (10.7 in) |
| 体重 | 52.3 g (1.84 oz) | 48.0 g (1.69 oz) |
| 食性 | Nocturnal insectivore feeding on beetles, moths, and ants; hunts with short aerial sallies and ground-gleaning. | Crepuscular to nocturnal; feeds on large beetles, moths, and flying insects by aerial sallies and … |
| 一腹卵数 | -- | 2-5 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Vogelkop Owlet-nightjar
Soft churring trill; quiet 'trrr' from Vogelkop Peninsula forest; calls at night; poorly documented; similar to Barred Owlet-nightjar but softer; alarm a chattered series
Australian Owlet-nightjar
Loud, churring 'churr-churr' and yapping 'quee-quee'; distinctive churring trill; calls at night from tree hollows in Australian woodland; alarm a sharp yapping series
Geographic Range & Migration
Vogelkop Owlet-nightjar
Endemic to the Vogelkop Peninsula of western New Guinea. Found in lowland and hill forest. Range and habits poorly understood from few specimens.
Australian Owlet-nightjar
Found throughout Australia including Tasmania. Resident in woodland, mallee scrub, and suburban areas. Australia's most widespread owlet-nightjar.
保全状況
Vogelkop Owlet-nightjar
Australian Owlet-nightjar
How to Tell Them Apart
Vogelkop Owlet-nightjar
Dark grey-brown upperparts with darker barring; underparts pale buff barred dark brown; facial disc with dark border; restricted to Vogelkop Peninsula, New Guinea; slightly darker and greyer than allied Mountain …
Australian Owlet-nightjar
Grey-brown upperparts with dark brown barring; underparts pale buff finely barred dark; facial disc with bold dark bars; small crest feathers; two morphs—grey and rufous-brown; commonly seen perching upright in …
About These Birds
Vogelkop Owlet-nightjar
A medium-sized owlet-nightjar (22-24 cm) found in montane forests of the Vogelkop Peninsula (Bird's Head) of western New Guinea. Dark brown barred plumage. Nocturnal insectivore. Recently recognized as a distinct species, separated from Barred Owlet-nightjar. Limited ecological data.
Australian Owlet-nightjar
A small owlet-nightjar (21-25 cm), the most widespread and familiar member of its family. Found across Australia and southern New Guinea. Grey or rufous plumage with bold dark streaks and a distinctive facial disc. Nocturnal insectivore nesting in tree hollows. Resident and common.