Northern saw-whet owl (Aegolius acadicus)

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Although the northern saw-whet owl (hereafter saw-whet owl) is one of the most common owls in forested habitats across southern Canada and the northern United States, much remains to be learned about its populations, distribution and movements, behavior, and breeding biology. It is one of our smallest northern owls. Saw-whet owls are found in most woodland habitats, with densities highest in coniferous forests at moderate elevation and latitude. Throughout most of its range, the species preys on small mammals, primarily deer mice (Peromyscus maniculatus) and white-footed mice (P. leucopus), which it hunts at night from low perches. Discussed in this account is all information known to date about the species' appearance, biology and physiology, ecology, behavior, and demography/populations. Included are conservation and management issues and priorities for future research regarding the species.

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Location: http://bna.birds.cornell.edu/bna/species/042

Rasmussen, Justin Lee, Spencer G. Sealy, and Richard J. Cannings. 2008. Northern saw-whet owl (Aegolius acadicus). Revised edition. The Birds of North America online, A. Poole, editor. No. 042. Ithaca, NY: Cornell Lab of Ornithology. Retrieved from: http://bna.birds.cornell.edu/bna/species/042, March 2015.