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Side-by-Side Comparison

属性	Archbold's Nightjar	Papuan Nightjar
学名	Eurostopodus archboldi	Eurostopodus papuensis
目	Caprimulgiformes	Caprimulgiformes
科	Caprimulgidae	Caprimulgidae
保全状況	Least Concern	Least Concern
体長	—	—
翼開長	41.0 cm (16.1 in)	37.9 cm (14.9 in)
体重	77.0 g (2.72 oz)	80.5 g (2.84 oz)
食性	Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest.	Hawks large flying insects, especially moths, at night over Papuan forest and savanna.
一腹卵数	1	1
Population Trend	—	—

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Habitat Comparison

共通生息地

🌲 Forest

Archbold's Nightjar only

None

Papuan Nightjar only

None

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Song & Call Comparison

Archbold's Nightjar

さえずり

Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea

Papuan Nightjar

さえずり

Churring, repetitive nocturnal call; soft bubbling trill; melodic series of hollow notes; calls from low perch or ground in New Guinea lowland forest

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Geographic Range & Migration

Archbold's Nightjar

Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.

Papuan Nightjar

Resident of savanna woodland, grass, and scrub in lowland New Guinea (Papua, Indonesia and Papua New Guinea).

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保全状況

Least Concern

Archbold's Nightjar

Least Concern

Papuan Nightjar

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How to Tell Them Apart

Archbold's Nightjar

羽毛

Brown and dark grey with rufous-buff vermiculations; whitish throat patch; pale buff supercilium contrasts with darker crown; no white wing or tail patches; tail barred; New Guinea highlands; few records.

Papuan Nightjar

羽毛

Dark grey-brown finely vermiculated with buff and black; pale buff and rufous throat patch; pale supercilium; no white wing patches; tail barred brown and buff; cryptically patterned bark-mimicking plumage.

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About These Birds

Archbold's Nightjar

ニューギニアの亜高山帯に生息するヨタカで、探検家リチャード・アーチボルドにちなんで命名された。

Papuan Nightjar

ニューギニア南部の低地に生息するヨタカで、体重81g。

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