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Side-by-Side Comparison

属性	Heinrich's Nightjar	Papuan Nightjar
学名	Eurostopodus diabolicus	Eurostopodus papuensis
目	Caprimulgiformes	Caprimulgiformes
科	Caprimulgidae	Caprimulgidae
保全状況	Least Concern	Least Concern
体長	—	—
翼開長	39.9 cm (15.7 in)	37.9 cm (14.9 in)
体重	104.0 g (3.67 oz)	80.5 g (2.84 oz)
食性	Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known.	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

Heinrich's Nightjar only

None

Papuan Nightjar only

None

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Song & Call Comparison

Heinrich's Nightjar

さえずり

Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night

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

Heinrich's Nightjar

Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.

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

Heinrich's Nightjar

Least Concern

Papuan Nightjar

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How to Tell Them Apart

Heinrich's Nightjar

羽毛

Rufous-brown and dark brown mottled with buff vermiculations; large pale buff throat patch; pale buff supercilium; no white wing markings; tail darkly barred brown and buff. Poorly known; Sulawesi endemic.

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

Heinrich's Nightjar

スラウェシ島固有のヨタカで、体重104g。「悪魔のヨタカ」という名で知られる。

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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