Barred Owlet-nightjar vs New Caledonian Owlet-nightjar
Aegotheles bennettii 比較対象 Aegotheles savesi
Side-by-Side Comparison
| 属性 | Barred Owlet-nightjar | New Caledonian Owlet-nightjar |
|---|---|---|
| 学名 | Aegotheles bennettii | Aegotheles savesi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Aegothelidae | Aegothelidae |
| 保全状況 | Least Concern | Critically Endangered |
| 体長 | — | — |
| 翼開長 | 24.6 cm (9.7 in) | 32.6 cm (12.8 in) |
| 体重 | 52.416666666666664 g (1.85 oz) | 55.5 g (1.96 oz) |
| 食性 | Crepuscular and nocturnal aerial insectivore; catches beetles, moths, and flying ants in short sallying flights … | Night hunter of beetles, large moths, and termites; combines aerial sallying with gleaning on tree … |
| 一腹卵数 | 2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
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
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.
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
Barred Owlet-nightjar
New Caledonian Owlet-nightjar
How to Tell Them Apart
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 …
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
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.
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.