The Deer Mouse is a brown, small sized mouse that occurs abundantly on the Etiwanda Fan. The Deer Mouse is found in a most habitats from northern Canada, throughout the lower 48 states and south into Baja California and Mexico. There are 71 races of Deer Mouse. The local race is P. m. gambelii.
Status: Not protected
Habitat: Most habitats within its range
Diet: Insects and seeds
Mean* adult body length: 81.9 mm
Mean* adult tail length: 74.6 mm
Mean* adult hind foot length: 18.6 mm
Mean* adult ear length: 16.4 mm
*mean measurement of individuals captured in the San Bernardino Valley by Museum researchers
The graph below shows the activity periods of adults and immatures from 1999 through 2001. Both the adult and immature individuals can be present year around. Note that immature individuals grow to adult size and molt into adult pelage within a single breeding season.
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