Heinrich's Nightjar vs Papuan Nightjar
Eurostopodus diabolicus compared with Eurostopodus papuensis
Side-by-Side Comparison
| Attribute | Heinrich's Nightjar | Papuan Nightjar |
|---|---|---|
| Scientific Name | Eurostopodus diabolicus | Eurostopodus papuensis |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Caprimulgidae | Caprimulgidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 39.9 cm (15.7 in) | 37.9 cm (14.9 in) |
| Weight | 104.0 g (3.67 oz) | 80.5 g (2.84 oz) |
| Diet | 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. |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
Papuan Nightjar
Churring, repetitive nocturnal call; soft bubbling trill; melodic series of hollow notes; calls from low perch or ground in New Guinea lowland forest
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).
Conservation Status
Heinrich's Nightjar
Papuan Nightjar
How to Tell Them Apart
Heinrich's Nightjar
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
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.
About These Birds
Heinrich's Nightjar
A medium Caprimulgidae nightjar (~104 g) endemic to the forest and forest-edge habitats of Sulawesi, Indonesia. Cryptically patterned brown-and-buff. Nocturnal insectivore; catches moths and beetles in aerial sallies. Little studied and rarely encountered in the field. Least Concern within its Sulawesi range.
Papuan Nightjar
A small Caprimulgidae nightjar (~81 g) of lowland savanna, grassland, and forest edges across the southern lowlands of New Guinea. Cryptic buff-and-brown plumage; white-spotted wings visible in flight. Nocturnal aerial insectivore. Commonly heard at night but rarely seen by day. Least Concern.