. The Canadian field-naturalist. 220 The Canadian Field-Naturalist Vol. 118. Barred Owl Occurrences 1912-1974 Figure 2. Barred Owl distribution from 1912 through 1974 (map courtesy of Alberta Conservation Association/Alberta Sus- tainable Resource Development).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club

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