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

Taxonomic note
Has been considered to be closest to N. rufa. Monotypic.

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
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1996	Vulnerable
1994	Vulnerable
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	1,290,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2200-2800 mature individuals	poor	estimated	2009
Population trend	stable	-	suspected	-
Generation length	7.71 years	-	-	-

Population justification: Garnett and Crowley (2000) estimated the population size as follows: fewer than 500 pairs (equating to 1,000 individuals) in Victoria, approximately 1,000-1,500 pairs in north-east New South Wales (approximately 2,000-3,000 individuals) and approximately 125 pairs (equating to 250 individuals) in south-east New South Wales. This gives an overall population estimate of between 3,250 and 4,250 individuals, equating roughly to 2,200-2,800 mature individuals. Garnett and Crowley (2000) state that the current population is stable and broadly similar to pre-European population levels. The species is equally able to live and breed in heavily logged, lightly logged or unlogged forest.

Trend justification: Garnett and Crowley (2000) state that the current population is stable and broadly similar to pre-European population levels. The species is equally able to live and breed in heavily logged, lightly logged or unlogged forest.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Australia	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Arable Land	marginal	resident
Artificial/Terrestrial	Plantations	marginal	resident
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	marginal	resident
Artificial/Terrestrial	Urban Areas	marginal	resident
Forest	Temperate	suitable	resident
Shrubland	Temperate	suitable	resident
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	suitable	resident
Altitude	0 - 1500 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

Purpose	Scale
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Powerful Owl Ninox strenua. Downloaded from https://datazone.birdlife.org/species/factsheet/powerful-owl-ninox-strenua on 28/11/2024.
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 28/11/2024.