Smithsonian National Museum of Natural History, North American Mammals
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Reithrodontomys montanus

Plains Harvest Mouse

Order: Rodentia
Family: Cricetidae

Image of Reithrodontomys montanus
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Conservation Status: Least Concern.

Plains Harvest Mice are found in grassy areas, including hay and wheat fields. They seem to prefer shorter grasses, and build round nests of grass on or near the ground. Newborns are blind and hairless, and weigh about a gram, but are weaned at about two weeks and are adult-size in five weeks.

Sexual Dimorphism:

Average: 116 mm
Range: 54-116 mm

Range: 6-13 g


Baird, S.F., 1855.  Characteristics of some new species of North American Mammalia, collected chiefly in connection with the U.S. surveys of a railroad route to the Pacific, p. 335.  Proceedings of the Academy of Natural Sciences of Philadelphia, 7:333-336.


Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Reithrodontomys montanus