Vogelkop Owlet-nightjar vs New Caledonian Owlet-nightjar
Aegotheles affinis 比較対象 Aegotheles savesi
Side-by-Side Comparison
| 属性 | Vogelkop Owlet-nightjar | New Caledonian Owlet-nightjar |
|---|---|---|
| 学名 | Aegotheles affinis | Aegotheles savesi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Aegothelidae | Aegothelidae |
| 保全状況 | Near Threatened | Critically Endangered |
| 体長 | — | — |
| 翼開長 | 26.7 cm (10.5 in) | 32.6 cm (12.8 in) |
| 体重 | 52.3 g (1.84 oz) | 55.5 g (1.96 oz) |
| 食性 | Nocturnal insectivore feeding on beetles, moths, and ants; hunts with short aerial sallies and ground-gleaning. | Night hunter of beetles, large moths, and termites; combines aerial sallying with gleaning on tree … |
| 一腹卵数 | -- | -- |
| 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
New Caledonian Owlet-nightjar
Extremely poorly known; presumed churring trill; critically endangered with fewer than 50 individuals; no confirmed recordings from New Caledonian forest
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.
New Caledonian Owlet-nightjar
Possibly extinct; known from one specimen from New Caledonia collected in 1880. Critically Endangered; may survive in dense humid forest.
保全状況
Vogelkop Owlet-nightjar
New Caledonian 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 …
New Caledonian Owlet-nightjar
Dark brown upperparts with buff barring; underparts pale buff barred dark brown; facial disc with dark surround; large for genus; critically endangered New Caledonian endemic known from very few records …
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.
New Caledonian Owlet-nightjar
An extremely rare and possibly extinct owlet-nightjar (28 cm) endemic to New Caledonia. Known from a single specimen collected in 1880 and one probable sighting in 1998. Classified as Critically Endangered. Believed to inhabit humid montane forest. Ecology virtually unknown.