Vogelkop Owlet-nightjar vs Barred Owlet-nightjar
Aegotheles affinis 比較対象 Aegotheles bennettii
Side-by-Side Comparison
| 属性 | Vogelkop Owlet-nightjar | Barred Owlet-nightjar |
|---|---|---|
| 学名 | Aegotheles affinis | Aegotheles bennettii |
| 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) | 24.6 cm (9.7 in) |
| 体重 | 52.3 g (1.84 oz) | 52.416666666666664 g (1.85 oz) |
| 食性 | Nocturnal insectivore feeding on beetles, moths, and ants; hunts with short aerial sallies and ground-gleaning. | Crepuscular and nocturnal aerial insectivore; catches beetles, moths, and flying ants in short sallying flights … |
| 一腹卵数 | -- | 2 |
| 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
Barred Owlet-nightjar
Churring 'churr-churr'; moderate-pitched trill from New Guinea lowland forest; calls at night from tree hollows; alarm a chattering series; repetitive territorial call
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.
Barred Owlet-nightjar
Found in New Guinea and adjacent islands in lowland and hill forest. Resident in diverse forest types from coast to 1,500 m elevation.
保全状況
Vogelkop Owlet-nightjar
Barred 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 …
Barred Owlet-nightjar
Brown upperparts with distinct dark brown barring creating ladder-like pattern; underparts pale buff with extensive dark barring; bold facial disc markings; New Guinea species with the most conspicuously barred plumage …
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.
Barred Owlet-nightjar
A medium-sized owlet-nightjar (23-26 cm) found in forests and savanna woodland of New Guinea and northern Australia. Barred brown plumage with a dark crown and facial disc. Nocturnal insectivore, nesting in tree hollows. The most widespread New Guinean owlet-nightjar.