We caught Myotis lucifugus, M. yumanensis, M. volans, M. evotis/keenii, M. californicus, and Lasionycteris noctivagans in mist nets at Mt. Cain in coastal British Columbia during 1996–1998. We analyzed their feces and determined the percent frequency of occurrence of different prey groups. Bats consumed prey from 9 prey groups. Diets varied significantly between M. californicus and M. lucifugus, but there was substantial overlap of the principal prey groups consumed by all species of bats. These principal prey groups were Diptera, Lepidoptera, Neuroptera, and Hymenoptera. Diets were similar between elevations and among seasons for both M. californicus and M. lucifugus.
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