red fox, Vulpes vulpes necator, cover, cover type, tracks, Lassen, edge
Benson, John F.; Perrine, John D.; Golightly, Richard T. Jr.; and Barrett, Reginald H.
"Use of cover and response to cover type edges by female Sierra Nevada red foxes in winter,"
Western North American Naturalist: Vol. 65
, Article 16.
Available at: http://scholarsarchive.byu.edu/wnan/vol65/iss1/16