Population
Estimated population is 2,500 - 9,999 (2010) and decreasing.
Status VU
Forest habitat loss and fragmentation through logging, human settlement, conversion to agriculture is the main threat.
For more information see BirdLife International Species Factsheet.
Voice
Little known. Flight calls may include weak screams, loud 'whirrip' notes and soft churrs.
Satanic Nightjar (Eurostopodus diabolicus) [XC57231]
by id from Gunung Rorekautimbu, Central Sulawesi, Indonesia (song)
Satanic Nightjar (Eurostopodus diabolicus) [XC68279]
by Mike Nelson from Sulawesi; Lore Lindu NP, above Anaso, Indonesia (call)
Subspecies
Affinities of present species uncertain, but may be most closely related to other forest nightjars, Papuan Eared-Nightjar (Eurostopodus papuensis) and Mountain Eared-Nightjar (Eurostopodus archboldi).
No subspecies.
Similar Species
Great Eared-Nightjar (Lyncornis macrotis) which is much larger and paler, with longer ear-tufts and pale nuchal collar, female Grey Nightjar (Caprimulgus indicus), female Savanna Nightjar (Caprimulgus affinis) and juvenile Sulawesi Nightjar (Caprimulgus celebensis) are similar, but smaller and paler.
References
See References.