Introduction
The New Caledonian Nightjar (Eurostopodus exul) is a poorly known nightjar endemic to New Caledonia. It is known from a single specimen collected in 1939, and no confirmed individual has been recorded since. As a result, much of its biology remains undocumented and the species is considered possibly extinct.
Physical Description
Reliable physical information comes from the type specimen, a female. It had silvery-grey plumage marked with dark blotches and streaks, a blackish crown, dark grey-brown underparts and a small white throat patch. Its recorded wing length was 184 mm, tail length was 138 mm and mass was approximately 77 g.
The species was originally treated as a form of the White-throated Nightjar, Eurostopodus mystacalis, but it is now generally recognised as a distinct species. The available specimen was smaller and differed in plumage from typical E. mystacalis. There is no reliable information on juvenile plumage, sexual variation beyond the known female, or age-related differences.
Range and Habitat
The New Caledonian Nightjar is endemic to New Caledonia and is known only from Grande Terre, the archipelago’s main island. The type specimen was collected in 1939 in coastal savanna in the north-eastern part of the island, with sources associating the locality with the Mount Panié region. The species’ full historical range is unknown.
The original article described the bird as associated with dry forest and lowland habitats, but the available evidence is too limited to define its habitat preferences with confidence. No confirmed elevation range, population distribution or geographic variation has been established. It is not known to be migratory.
Behaviour and Diet
Almost nothing is known about the New Caledonian Nightjar’s behaviour. As a member of the nightjar family, it would be expected to have been mainly nocturnal and insectivorous, but species-specific observations of feeding, roosting, social behaviour, calls and movements are lacking.
The original article stated that the species hunted flying insects and roosted during the day on the ground or low branches. These behaviours are plausible for a nightjar, but they have not been adequately documented for E. exul and should not be treated as confirmed species-specific observations. Breeding behaviour, nesting sites, clutch size and parental care are unknown.
Identification Tips
A confirmed identification is not currently possible in the field because the species has not been reliably observed since 1939. The known specimen can be distinguished by its combination of silvery-grey, darkly marked plumage, blackish crown, dark grey-brown underparts and small white throat patch.
The New Caledonian Nightjar was considered similar to the White-throated Nightjar, Eurostopodus mystacalis, but was smaller and differed in plumage. Its recorded measurements were closer to those of the Spotted Nightjar, Eurostopodus argus, although this comparison is based on specimens rather than confirmed field encounters. Any modern report would require clear photographs, recordings and independent expert verification.
Conservation Status
The New Caledonian Nightjar is listed as Critically Endangered, Possibly Extinct on the IUCN Red List. It is known from only one specimen, collected in 1939, and there have been no confirmed records since. The population size and trend cannot be estimated reliably.
Potential threats include the loss and degradation of New Caledonia’s dry forests and savanna, as well as predation by introduced mammals such as cats and rats. These threats are inferred from the species’ restricted known distribution and from wider conservation concerns affecting New Caledonian birds. Because the bird has not been rediscovered, the most important conservation measures are targeted surveys, protection of remaining suitable habitat and investigation of introduced-predator impacts in areas where suitable habitat persists.
Frequently Asked Questions
Where is the New Caledonian Nightjar found?
It is endemic to New Caledonia and is known from a single specimen collected on Grande Terre, probably in the north-eastern part of the island near the Mount Panié region.
When was the New Caledonian Nightjar last recorded?
The last confirmed record is a specimen collected in 1939. No later confirmed sighting has been accepted.
Is the New Caledonian Nightjar extinct?
It may be extinct, but this has not been conclusively demonstrated. The IUCN therefore lists it as Critically Endangered with the qualifier Possibly Extinct.
What does the New Caledonian Nightjar look like?
The known female had silvery-grey plumage with dark blotches and streaks, a blackish crown, dark grey-brown underparts and a small white throat patch.
What does the New Caledonian Nightjar eat?
Its diet has not been documented. Nightjars generally feed on flying insects, but this should be regarded as an informed family-level expectation rather than a confirmed observation for E. exul.
What threatens the New Caledonian Nightjar?
The likely threats are habitat loss and degradation, together with predation by introduced cats and rats. The severity of these threats to any surviving population is unknown.
References
- BirdLife International. 2025. Eurostopodus exul. The IUCN Red List of Threatened Species 2025. Available at: https://www.iucnredlist.org/species/22726340/250552840 (accessed 8 September 2026).
- BirdLife International. n.d. The IUCN Red List. BirdLife DataZone. Available at: https://datazone.birdlife.org/about-our-science/the-iucn-red-list (accessed 8 September 2026).
- Mayr, E. 1941. Birds collected during the Whitney South Sea Expedition. 47, Notes on the genera Halcyon, Turdus and Eurostopodus. American Museum Novitates 1152: 1–7. Available at: https://hdl.handle.net/2246/4778.
- Ekstrom, J. M., Jones, J. P. G., Willis, J., Tobias, J., Dutson, G. and Barré, N. 2002. New information on the distribution, status and conservation of terrestrial bird species in Grande Terre, New Caledonia. Emu 102(2): 197–207. https://doi.org/10.1071/MU01004.
- Higgins, P. J. (ed.). 1999. Handbook of Australian, New Zealand and Antarctic Birds. Volume 4: Parrots to Dollarbirds. Melbourne: Oxford University Press.
- Gill, F., Donsker, D. and Rasmussen, P. (eds). 2026. IOC World Bird List, version 15.2. International Ornithologists’ Union. Available at: https://www.worldbirdnames.org/ (accessed 8 September 2026).
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