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Text Source: Austen, M.J.W., MD. Cadman, and R.D. James. 1994. Ontario Birds at Risk: Status and Conservation Needs. Federation of Ontario Naturalists and Long Point Bird Observatory, Ontario. 165 pp.

Bull J. and J. Farrand. 1977. The Audubon Society Field Guide to North American Birds, Eastern Region. Knopf, New York. 775 pp.

Campbell, E.C. and R.W. Campbell. 1982. Status Report of the Common Barn Owl (Tyto alba) in Canada. COSEWIC. 77 pp.

Godfrey, W.E. 1986. Birds of Canada. Revised Edition. National Museum of Natural Sciences. National Museums of Canada.
Ontario Map Source: See text source.
North American Map Source: See text source.

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