• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note

Eurostopodus mystacalis, E. nigripennis and E. exul (del Hoyo and Collar 2014) were previously lumped as E. mystacalis following Sibley and Monroe (1990, 1993).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	C2a(i); D1

Red List history

Year	Category	Criteria
2023	Vulnerable	C2a(i); D1
2016	Vulnerable	C2a(i)
2014	Vulnerable	C2a(i)
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	medium
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	146,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	800-2499 mature individuals	poor	estimated	2019
Population trend	decreasing	-	inferred	-
Generation length	4.76 years	-	-	-
Number of subpopulations	5-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: This species is described as rare and localised (Dutson 2011), and given the small range and lack of recent records, the total population is presumed to be very small. Comprehensive searches have suggested there were previously 6 pairs spread around Tetepare's shoreline before two of these pairs were collected in 2019 (J. Bergmark in litt. 2023). Extrapolating this across the entire range gives a crude population estimate of 800 mature individuals, however it should be noted that the species is reportedly commoner on smaller islands (Dutson 2011) and recent records suggest that Tetepare may be a stronghold. Conversely, detection probability is low, the species is occasionally found inland (Dutson 2011) and recent observations combined with traditional local knowledge on Malaita suggest that it may have a wider range of nesting habitat than previously documented (Alabai et al. 2019) such that the population may be larger. As such, the population is tentatively placed here in the band 800-2,499 mature individuals (with no subpopulation exceeding 1,000 mature individuals) but dedicated surveys for this species are urgently required.

Trend justification: The species has disappeared from or become extremely rare at sites where it was historically recorded, such as the west side of Kolombangara, Guadalcanal and Santa Isabel, and there is no recognition of the species from locals in these areas (J. Bergmark in litt. 2023). An ongoing decline is inferred based on this decreasing frequency of records (Dutson 2011, del Hoyo et al. 2020) and the continuing threats to this species.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Papua New Guinea	extant	native	yes
Solomon Islands	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Marine Coastal/Supratidal	Sea Cliffs and Rocky Offshore Islands	suitable	resident
Marine Intertidal	Rocky Shoreline	suitable	resident
Marine Intertidal	Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc	suitable	resident
Marine Intertidal	Shingle and/or Pebble Shoreline and/or Beaches	suitable	resident
Marine Intertidal	Tidepools	suitable	resident
Altitude	0 - 300 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Reduced reproductive success
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance	Work & other activities	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Species disturbance, Reduced reproductive success
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Unspecified species	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Solomons Nightjar Eurostopodus nigripennis. Downloaded from https://datazone.birdlife.org/species/factsheet/solomons-nightjar-eurostopodus-nigripennis on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 22/12/2024.