http://ipm.ucanr.edu/PMG/PESTNOTES/pn7439.html BIOLOGY AND BEHAVIOR Voles are active day and night, year-round. You’ll normally find them in areas with dense vegetation. Voles dig many short, shallow burrows and make underground nests of grass, stems, and leaves. In areas with winter snow, voles will burrow in and through the snow to the surface. Several adults and youngread more

http://homeguides.sfgate.com/rodent-digging-under-concrete-86646.html Photo Credits Hemera Technologies/Photos.com/Getty Images Image: When danger threatens, ground squirrels immediately retreat to their burrow. If you live in the western U.S., the most likely rodent to dig holes under concrete is a California ground squirrel (Spermophilus beecheyi). They range from southern Washington to northern Mexico. Ground squirrels increase quickly and create largeread more

Burrowing animals: Determining species by burrows & damage – 6.521 by Sharon Bokan, Karen Crumbaker, Travis Hoesli, Deborah Lester and Irene Shonle* (2/16) Image: Vole runways in lawn after snow melt in spring. Quick Facts The four main kinds of small burrowing animals likely to cause damage in Colorado are voles, pocket gophers, prairie dogs,read more

http://naturemappingfoundation.org/natmap/facts/california_ground_squirrel_712.html California Ground Squirrel (Spermophilus beecheyi) Species Code: SPBEE Origin of the Name The California Ground Squirrel was named after Frederick William Beechey, who explored much of Northern California in 1826-28 as captain of His Majesty's Ship Blossom, this squirrel is also sometimes called the Beechey Ground Squirrel. Description: The adults have a mix ofread more

Pocket Gophers Identifying Pocket Gopher Mounds pocket gophers mound The entrances can be identified by small piles of loose dirt covering the opening. Their burrows can be found in many areas where the soil is softer and easily tunneled. They will often appear in vegetable gardens, lawns, or farms, as gophers like moist soil. Someread more