Although poorly documented, found in a wide range of forested and nonforested habitats with riparian scrub the most common habitat (MacDonald and Cook 2009). All specimens collected by Dokuchaev (1997) were from riparian habitats.
Auxiliary habitat preferences: A few specimens collected in open low mixed shrub sedge tussock tundra habitat, and one animal was found in closed tall willow shrub habitat (Peirce and Peirce 2000). Other specimen collections occurred over a wide range of habitat types including wetlands/bog and coniferous and mixed forests.
Dokuchaev, N. E. 1997. A new species of shrew (Soricidae, Insectivora) from Alaska. Journal of Mammalogy 78:811-817.
MacDonald, S. O. and J. A. Cook. 2009. Recent Mammals of Alaska. University of Alaska Press, Fairbanks, AK.
Peirce, K. N., and J. M. Peirce. 2000. Range extensions for the Alaska tiny shrew and pygmy shrew in southwestern Alaska. Northwestern Naturalist 81:67-68.