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Winter Food Habits of River Otters in Western Oregon

Dale E. Toweill
The Journal of Wildlife Management
Vol. 38, No. 1 (Jan., 1974), pp. 107-111
Published by: Wiley on behalf of the Wildlife Society
DOI: 10.2307/3800205
Stable URL: http://www.jstor.org/stable/3800205
Page Count: 5
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Winter Food Habits of River Otters in Western Oregon
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Abstract

Contents of the digestive tracts of 75 river otters (Lutra canadensis) collected in western Oregon between 15 November and 15 February, 1970-71 and 1971-72, were identified. Fish were the main staple of the diet, occurring in 80 percent of all digestive tracts examined. Major fish families represented were Cottidae (31 percent), Salmonidae (24 percent), and Cyprinidae (24 percent). Crustaceans, amphibians, and birds were other important food items occurring in 33, 12, and 8 percent, respectively, of all digestive tracts examined.

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