Smithsonian National Museum of Natural History, North American Mammals
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  Rodentia · Muridae · Peromyscus boylii
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Peromyscus boylii

Brush Mouse

Order: Rodentia
Family: Muridae

Image of Peromyscus boylii
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Brush Mice occupy rocky and brushy or forested environments in which rock ledges, piles of brush, fallen trees, and boulders offer shelter and denning sites. Although they are reportedly good climbers, they only occasionally build their nests in tree cavities. Within their enormous range, these Mice are found only at elevations above 2,000 m. They consume many kinds of nuts, seeds, and fruit, including grass seeds, acorns, pine nuts, hackberries, juniper berries, and fir seeds.

Sexual Dimorphism:
None

Length:
Average: 194 mm
Range: 175-210 mm

Weight:
Range: 22-36 g

References:

Baird, S.F., 1855.  Proceedings of the Academy of Natural Sciences of Philadelphia, 7:335.

Links:

Mammal Species of the World

Distribution of Peromyscus boylii