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

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
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	16,300,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	3000000-3900000 mature individuals	poor	estimated	2020
Population trend	increasing	-	estimated	-
Generation length	7.67 years	-	-	-

Population justification: The global population has been estimated at 3,500,000 mature individuals (Partners in Flight 2020). In North America (USA and Canada), the total population size is estimated at 3,500,000 mature individuals (Partners in Flight 2020). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 18.5% within its mapped range over the past three generations (23.01 years) (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). However, the species' population in North America (USA and Canada) is estimated to have a slightly positive annual trend, which equates to a rapid increase in population size over three generations (Partners in Flight 2024). As North America holds the vast majority of the species' global range, the global population size is considered to be increasing at a rapid rate over three generations.

Trend justification: This species has undergone a large and statistically significant increase over the last 40 years in North America (86.7% increase over 40 years, equating to a 16.8% increase per decade; data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Bermuda (to UK)	extant	vagrant			yes
Canada	extant	native	yes
Mexico	extant	native	yes
USA	extant	native		yes

Country/Territory	IBA Name
Mexico	El Carricito
Mexico	Guacamayita
Mexico	La Malinche
Mexico	Omiltemi
Mexico	Sierra de Taxco - Nevado de Toluca
Mexico	Tancítaro

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Rural Gardens	suitable	resident
Artificial/Terrestrial	Urban Areas	suitable	resident
Forest	Boreal	major	resident
Forest	Subtropical/Tropical Dry	suitable	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Forest	Temperate	suitable	resident
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	suitable	resident
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	suitable	resident
Wetlands (inland)	Seasonal/Intermittent Freshwater Lakes (over 8ha)	suitable	resident
Wetlands (inland)	Seasonal/Intermittent/Irregular Rivers/Streams/Creeks	suitable	resident
Altitude	0 - 3100 m	Occasional altitudinal limits

Purpose	Scale
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Barred Owl Strix varia. Downloaded from https://datazone.birdlife.org/species/factsheet/barred-owl-strix-varia on 25/12/2024.
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 25/12/2024.