Voles
Voles breed throughout the year, with peaks occurring during spring and summer. Voles can produce 3 to 12 litters per year with 3 to 5 being average. Litters range in size from 1 to 11 young per litter, with 3 to 6 being the average. Although gestation periods vary slightly among species, 21 days is the average length of gestation for voles. Young are weaned by the time they are 21 days old, and females are sexually mature within 40 days
VOLES IN COLORADO
Eight species of voles are distributed widely throughout various ecosystems of Colorado
SOUTHERN RED-BACKED VOLE (Clethrionomys gapperi)
They are found in moist and well-developed coniferous forests. They are most abundant in lodgepole pine stands, usually between 8,000 and 11,000 feet
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