This nocturnal predator ranges through all urban and rural wooded areas of Canada, but prefers open woodland and treed areas in agricultural lands. Though not ideal surveys for this species, results from the Breeding Bird Survey and the Christmas Bird Count suggest that the Canadian population of the Great Horned Owl has experienced a decrease relative to 1970. Historically, Great Horned Owls were commonly shot due to concerns over poultry predation. Despite being protected, some illegal shooting persists (Artuso et al. 2014).
The species adapts to habitat change, as long as nest sites remain available. It appears to be relatively tolerant of disturbances at nest sites (Artuso et al. 2014). Nest sites are generally re-used nests of other stick nest builders (Artuso et al. 2014). Although very flexible in habitat choice, the Great Horned Owl prefers open woodlands and agricultural habitats (Artuso et al. 2014). Intensification of agricultural activities and subsequent reduction in availability of small mammalian prey may be related to the population decreases in some areas such as southern Ontario (Sleep 2007).
Environment and Climate Change Canada and partners have developed Bird Conservation Region Strategies in each of Canada’s Bird Conservation Regions (BCRs). In these strategies, selected species are identified as priorities for one or more of the following reasons:
Select any of the sub-regions below to view the BCR strategy for additional details.