Rusty-barred Owl Strix hylophila


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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2022 Least Concern
2016 Near Threatened A2c+3c+4c
2012 Near Threatened A2c+3c+4c
2008 Near Threatened A2c; A3c; A4c
2004 Near Threatened
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,200,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing poor suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 10-19 - - -
Decline (10 years/3 generation past and future) 10-19 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 5.6 - - -

Population justification: The global population size has not been quantified. This species has been described as rare overall, but is common in Misiones, Argentina (Holt et al. 2020).

Trend justification: The species is suspected to be in decline, mainly caused by habitat loss. A recent deforestation analysis found that tree cover loss within the species' range amounted to c. 10% over the past three generations ([16.8 years; Bird et al. 2020], Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). Based on annual rates of tree cover loss over the past five years, this rate is projected to increase up to 12% over the next three generations (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). The species remains rare in some parts of its range (Holt et al. 2020) and it may also be subject to trade that could accelerate declines beyond the rate of habitat loss alone. Overall, the species is suspected to be declining at a rate of 10-19% over three generations.

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant Yes
Brazil N Extant Yes
Paraguay N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Parque Provincial Uruzú y Reserva Forestal San Jorge
Argentina Alta cuenca del arroyo Alegría
Argentina Montecarlo
Argentina Reserva de la Biósfera Yabotí
Argentina Parque Provincial Cruce Caballero
Argentina San Antonio
Argentina San Pedro
Argentina Parque Nacional Iguazú y alrededores
Argentina Parque Provincial Urugua-í
Paraguay Estancia Itabó
Paraguay Parque Nacional Caazapá
Paraguay Parque Nacional San Rafael
Paraguay Estancia Muxfeldt
Brazil Parque Estadual da Serra do Brigadeiro
Brazil Complexo Pedra Azul / Forno Grande
Brazil Jaguariaíva
Brazil Campos Gerais do Paraná
Brazil Serra da Mantiqueira
Brazil Serra do Marumbi
Brazil Parque Nacional do Iguaçu
Brazil São Francisco Xavier / Monte Verde
Brazil Área de Proteção Ambiental de Guaratuba
Brazil Região de Blumenau
Brazil Parque Nacional de São Joaquim
Brazil Guaraqueçaba / Jacupiranga / Cananéia
Brazil Maciço Florestal de Paranapiacaba
Brazil Parque Nacional de Itatiaia
Brazil Parque Estadual do Turvo
Brazil Campos do Planalto das Araucárias
Brazil Região dos Aparados da Serra
Brazil Médio Rio Camaquã

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Artificial/Terrestrial Urban Areas suitable resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 0 - 1810 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Agro-industry farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Causing/Could cause fluctuations Medium Impact: 6
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Causing/Could cause fluctuations Low Impact: 5
Species disturbance, Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Causing/Could cause fluctuations Medium Impact: 6
Ecosystem degradation, Ecosystem conversion

Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Strix hylophila. Downloaded from on 01/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 01/12/2022.