Only documented in forested regions of Alaska (Parker 1996, Parker et al. 1997). In Southeast Alaska, favors old-growth forests and riparian habitats (Parker et al. 1996). Roosts in building, trees, under rocks and wood, and caves. Karst system in Southeast Alaska may also be important (MacDonald and Cook 1996).
MacDonald, S.O. and J.A. Cook. 1996. The land mammal fauna of Southeast Alaska. The Canadian Field- Naturalist 110(4):571-598.
Parker, D.I. 1996. Forest ecology and distribution of bats in Alaska. M. S. thesis. Univ. of Alaska, Fairbanks. 73 pp.
Parker, D.I., B.E. Lawhead, and J.A. Cook. 1997. Distributional limits of bats in Alaska. Arctic 50(3):256- 265.