Species: Microtus townsendii
Townsend's Vole
Species
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Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Mammalia
Order
Rodentia
Family
Cricetidae
Genus
Microtus
NatureServe
Classification
Other Global Common Names
campagnol de Townsend
Informal Taxonomy
Animals, Vertebrates - Mammals - Rodents
Formal Taxonomy
Animalia - Craniata - Mammalia - Rodentia - Cricetidae - Microtus
Ecology and Life History
Migration
true - false - false
Non-migrant
true
Locally Migrant
false
Food Comments
Eats various kinds of green vegetation; grasses, sedges, and forbs, mint (MENTHA) bulbs.
Reproduction Comments
Length of breeding season depends on stage in multiannual abundance cycle. Gestation lasts 21-24 days. Litter size averages 4-7 in different areas. In captivity, young are weaned at 15-17 days, first estrus at 35-80 days (Cornely and Verts 1988).
Ecology Comments
Density up to several hundred per ha during population peaks.
Length
24
Weight
103
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
1996-11-13
Global Status Last Changed
1996-11-13
Other Status
LC - Least concern
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=S5&US.CA=SNR&US.OR=S4&US.WA=S5" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
Triangle Island, British Columbia, south to Humbolt Bay, California; east in British Columbia to Chilliwack; in Washington to Sauk, Nisqually Flats, and Clark County; in Oregon to Salem, Eugene, and Prospect. Sea level to about 1830 m in Olympic Mountains, to about 915 m in Cascades, Oregon.