In Alaska, occurs primarily in montane coniferous forests at 2000-3000 m (Nagorsen and Brigham 2003, NatureServe 2006, Boland 2007). Likely prefers old-growth and riparian habitats. Summer day roosts and maternity colonies found in rock crevices in cliffs, cracks in ground and trees, under tree bark, and in buildings (MacDonald and Cook 2007).
Boland, J. L. 2007. Distribution of bats in southeast Alaska and selection of day-roosts in trees by Keen’s myotis on Prince of Wales Island, southeast Alaska. Unpublished thesis. Oregon State University, Corvallis.
MacDonald, S.O. and J.A. Cook. 2007. Mammals and amphibians of Southeast Alaska. The Museum of Southwestern Biology, Special publication 8:1-191. University of New Mexico, Albuquerque, NM.
Nagorsen, D.W. and R.M. Brigham. 1993. Bats of British Columbia. Royal British Columbia Museum Handbook. Volume 1, The mammals of British Columbia. UBC Press. Vancouver, British Columbia, Canada. 164 p.
NatureServe. 2006. NatureServe Explorer: An online encyclopedia of life. Version 5.0. NatureServe, Arlington, VA. Available http://www.natureserve.org/explorer.