Peromyscus californicus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Peromyscus californicus
Species Authority: (Gambel, 1848)
Common Name(s):
English California Mouse

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Linzey, A.V., Timm, R., Álvarez-Castañeda, S.T. & Lacher, T.
Reviewer(s): McKnight, M. (Global Mammal Assessment Team) & Amori, G. (Small Nonvolant Mammal Red List Authority)
This species is listed as Least Concern in view of its wide distribution, presumed large population, and because it does not appear to be under threat and is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category.
1996 Lower Risk/least concern (Baillie and Groombridge 1996)

Geographic Range [top]

Range Description: Restricted to southern California (United States) and northern Baja California (Mexico). Elevational range sea level to 2,440 m.
Mexico; United States (California)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Can be locally common.

Low, but stable densities, with populations up to 104 individuals/ha depending on habitat and season. Appears to associate with Neotoma fuscipes, with densities possibly correlating with abundance of Neotoma dens.
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: Occurs in chaparral, coniferous and oak woodlands, coastal sage scrub, and laurel and redwood forests.

Finds cover in natural holes and crevices and uses burrows of other animals. Often lives in stick nests built by wood rats. Young are born in complex nests of grasses, weeds and sticks located under logs or other debris.
Systems: Terrestrial

Threats [top]

Major Threat(s): None known.

Conservation Actions [top]

Conservation Actions: There are no known conservation measures specific to this species. It is not known if the species is present in any protected areas.

Citation: Linzey, A.V., Timm, R., Álvarez-Castañeda, S.T. & Lacher, T. 2008. Peromyscus californicus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 28 March 2015.
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