LC
Boreal Owl Aegolius funereus



Family: Strigidae (Typical Owls)

Authority: (Linnaeus, 1758)

Red List Category

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Justification of Red List category
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (extent of occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be fluctuating but stable in the long term, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Population size: 730000-1810000 mature individuals

Population trend: stable

Extent of occurrence (breeding/resident): 73,800,000 km2

Country endemic: no

Attributes
Realm - Indomalayan
Realm - Nearctic
Realm - Palearctic
IUCN System - Terrestrial
Raptors MOU

Recommended citation
BirdLife International (2024) Species factsheet: Boreal Owl Aegolius funereus. Downloaded from https://datazone.birdlife.org/species/factsheet/boreal-owl-aegolius-funereus on 24/11/2024.
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 24/11/2024.