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Montana Field Guides

Deer Mouse - Peromyscus maniculatus

Image Copyright and Usage Information
Native Species

Global Rank: G5
State Rank: S5
(see State Rank Reason below)


Agency Status
USFWS:
USFS:
BLM:


 

External Links

State Rank Reason (see State Rank above)
Species is relatively common within suitable habitat and widely distributed across portions of the state
  • Details on Status Ranking and Review
    Deer Mouse (Peromyscus maniculatus) Conservation Status Review
    Review Date = 05/03/2018
    Range Extent

    ScoreG - 200,000-2,500,000 km squared (about 80,000-1,000,000 square miles)

    Comment380,531 square Kilometers from Natural Heritage Program range maps

    Long-term Trend

    ScoreE - Relatively Stable (±25% change)

    CommentHabitat is likely stable within +/- 25% since European settlement

    Short-term Trend

    ScoreU - Unknown. Short-term trend in population, range, area occupied, and number and condition of occurrences unknown.

    CommentNo data on trends available

    Threats

    ScoreH - Unthreatened. Threats if any, when considered in comparison with natural fluctuation and change, are minimal or very localized, not leading to significant loss or degradation of populations or area even over a few decades’ time. (Severity, scope, and/or immediacy of threat considered Insignificant.)

    CommentNo operational threats in the next 15-20 years identified

    Intrinsic Vulnerability

    ScoreC - Not Intrinsically Vulnerable. Species matures quickly, reproduces frequently, and/or has high fecundity such that populations recover quickly (< 5 years or 2 generations) from decreases in abundance; or species has high dispersal capability such that extirpated populations soon become reestablished through natural recolonization (unaided by humans).

    CommentNot Intrinsically Vulnerable. Species matures quickly, reproduces frequently, and/or has a high fecundity such that populations recover quickly (< 5 years or 2 generations) from decreases in abundance. Species has good dispersal capabilities such that e

    Environmental Specificity

    ScoreD - Broad. Generalist. Broad-scale or diverse (general) habitat(s) or abiotic and/or biotic factors are used or required by the species, with all key requirements common in the generalized range of the species in the area of interest. If the preferred food(s) or breeding/nonbreeding microhabitat(s) become unavailable, the species switches to an alternative with no resulting decline in numbers of individuals or number of breeding attempts.

    CommentCommon in almost all habitats statewide

    Raw Conservation Status Score

    Score 3.5 + 0 (geographic distribution) + 0.5 (environmental specificity) + 0 (long-term trend) + 1 (threats) = 5

 
General Description
The Deer Mouse in Montana measures approximately 6 1/2 inches long, including its tail, and weighs under an ounce. Throughout the Intermountain West it varies in color from pale gray to dark reddish brown on its back and upper tail. Its belly, legs and feet, and the underside of its tail are white. Although the upper fur grades to a lighter color along the sides, it is distinguished by the sharp definition between top and underside. In addition, the Deer Mouse's large, lightly haired ears and big eyes, suited for its nocturnal habits and under-the-snow winter life, help to identify it (Foresman 2012).

Species Range
Montana Range Range Descriptions

Native

Western Hemisphere Range

 


Observations in Montana Natural Heritage Program Database
Number of Observations: 6951

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Migration
Non-migratory.

Habitat
In virtually all habitats - sagebrush desert, grasslands, riparian areas, montane, subalpine coniferous forests & alpine tundra (Pattie 1967, Hoffmann and Pattie 1968, Metzgar 1979). Usually not seen in wetlands (Jones et al. 1983).

Ecological Systems Associated with this Species
  • Details on Creation and Suggested Uses and Limitations
    How Associations Were Made
    We associated the use and habitat quality (common or occasional) of each of the 82 ecological systems mapped in Montana for vertebrate animal species that regularly breed, overwinter, or migrate through the state by:
    1. Using personal observations and reviewing literature that summarize the breeding, overwintering, or migratory habitat requirements of each species (Dobkin 1992, Hart et al. 1998, Hutto and Young 1999, Maxell 2000, Foresman 2012, Adams 2003, and Werner et al. 2004);
    2. Evaluating structural characteristics and distribution of each ecological system relative to the species' range and habitat requirements;
    3. Examining the observation records for each species in the state-wide point observation database associated with each ecological system;
    4. Calculating the percentage of observations associated with each ecological system relative to the percent of Montana covered by each ecological system to get a measure of "observations versus availability of habitat".
    Species that breed in Montana were only evaluated for breeding habitat use, species that only overwinter in Montana were only evaluated for overwintering habitat use, and species that only migrate through Montana were only evaluated for migratory habitat use.  In general, species were listed as associated with an ecological system if structural characteristics of used habitat documented in the literature were present in the ecological system or large numbers of point observations were associated with the ecological system.  However, species were not listed as associated with an ecological system if there was no support in the literature for use of structural characteristics in an ecological system, even if point observations were associated with that system.  Common versus occasional association with an ecological system was assigned based on the degree to which the structural characteristics of an ecological system matched the preferred structural habitat characteristics for each species as represented in scientific literature.  The percentage of observations associated with each ecological system relative to the percent of Montana covered by each ecological system was also used to guide assignment of common versus occasional association.  If you have any questions or comments on species associations with ecological systems, please contact the Montana Natural Heritage Program's Senior Zoologist.

    Suggested Uses and Limitations
    Species associations with ecological systems should be used to generate potential lists of species that may occupy broader landscapes for the purposes of landscape-level planning.  These potential lists of species should not be used in place of documented occurrences of species (this information can be requested at: mtnhp.org/requests) or systematic surveys for species and evaluations of habitat at a local site level by trained biologists.  Users of this information should be aware that the land cover data used to generate species associations is based on imagery from the late 1990s and early 2000s and was only intended to be used at broader landscape scales.  Land cover mapping accuracy is particularly problematic when the systems occur as small patches or where the land cover types have been altered over the past decade.  Thus, particular caution should be used when using the associations in assessments of smaller areas (e.g., evaluations of public land survey sections).  Finally, although a species may be associated with a particular ecological system within its known geographic range, portions of that ecological system may occur outside of the species' known geographic range.

    Literature Cited
    • Adams, R.A.  2003.  Bats of the Rocky Mountain West; natural history, ecology, and conservation.  Boulder, CO: University Press of Colorado.  289 p.
    • Dobkin, D. S.  1992.  Neotropical migrant land birds in the Northern Rockies and Great Plains. USDA Forest Service, Northern Region. Publication No. R1-93-34.  Missoula, MT.
    • Foresman, K.R.  2012.  Mammals of Montana.  Second edition.  Mountain Press Publishing, Missoula, Montana.  429 pp.
    • Hart, M.M., W.A. Williams, P.C. Thornton, K.P. McLaughlin, C.M. Tobalske, B.A. Maxell, D.P. Hendricks, C.R. Peterson, and R.L. Redmond. 1998.  Montana atlas of terrestrial vertebrates.  Montana Cooperative Wildlife Research Unit, University of Montana, Missoula, MT.  1302 p.
    • Hutto, R.L. and J.S. Young.  1999.  Habitat relationships of landbirds in the Northern Region, USDA Forest Service, Rocky Mountain Research Station RMRS-GTR-32.  72 p.
    • Maxell, B.A.  2000.  Management of Montana's amphibians: a review of factors that may present a risk to population viability and accounts on the identification, distribution, taxonomy, habitat use, natural history, and the status and conservation of individual species.  Report to U.S. Forest Service Region 1.  Missoula, MT: Wildlife Biology Program, University of Montana.  161 p.
    • Werner, J.K., B.A. Maxell, P. Hendricks, and D. Flath.  2004.  Amphibians and reptiles of Montana.  Missoula, MT: Mountain Press Publishing Company. 262 p.

Food Habits
Omnivorous diet although dentition is adapted for seed eating. Invertebrates important in warm months, green plant material a minor but important component. Stores some food in burrow (Jones et al. 1983).

Ecology
In forest areas densities peak about 2 to 5 years after clear-cutting, then decline as succession advances. 15 years after cut, uncut and cut densities similar. On prairie production, may be linked to precipitation.

Reproductive Characteristics
In Beartooths, begin breeding May or June - 2.3 litters/year, adults average 6.4 young/litter. In Missoula County, breed April to November. In Rosebud County, females pregnant March to October and average 5.25 young/litter (Pattie 1967, Metzgar 1979).


References
  • Literature Cited AboveLegend:   View Online Publication
    • Foresman, K.R. 2012. Mammals of Montana. Second edition. Mountain Press Publishing, Missoula, Montana. 429 pp.
    • Hoffmann, R.S. and D.L. Pattie. 1968. A guide to Montana mammals: identification, habitat, distribution, and abundance. Missoula, MT: University of Montana. 133 p.
    • Jones, J.K., D.M. Armstrong, R.S. Hoffmann and C. Jones. 1983. Mammals of the northern Great Plains. University of Nebraska Press, Lincoln. 379 pp.
    • Metzgar, L.H. 1979. Dispersion patterns in a Peromyscus population. Journal of Mammalogy 60(1):129-145.
    • Pattie, D.L. 1967. Dynamics of alpine small mammal populations. Ph.D dissertation. University of Montana, Missoula. 102 pp.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • [WWPC] Washington Water Power Company. 1995. 1994 wildlife report Noxon Rapids and Cabinet Gorge Reservoirs. Washington Water Power Company. Spokane, WA.
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    • Pinter, A. J. 1986. Population dynamics and litter size of the montane vole, Microtus montanus. Canadian Journal of Zoology 64:1487- 1490.
    • Plopper, C.E. 1968. Insular and mainland populations of Peromyscus maniculatus at Flathead Lake, Montana. M.S. thesis. University of Montana, Missoula. 91 pp.
    • Powder River Eagle Studies, Gillette, WY., 1992, Big Sky Mine 1991 wildlife monitoring studies. Rev. February 1992.
    • Powder River Eagle Studies, Inc., Gillette, WY., 1994?, Big Sky Mine 1993 wildlife studies. Date???
    • Powder River Eagle Studies, Inc., Gillette, WY., 1996, Spring Creek Mine 1995 Wildlife Monitoring Studies. Spring Creek Coal Company 1995-1996 Mining Annual Report. Vol. I, App. I. May 1996.
    • Pyrah, Duane, and Edward F. Schlatterer, 1968, Ecological effects of chemical and mechanical sagebrush control. Ecology of sagebrush control. W-105-R-2, A-1 and B-1 through B-10, July 1, 1966 through June 30, 1967.
    • Ramirez, Pedro, Jr. 1977. Small Populations in Different-Aged Clearcuts and Uncut Forests in Northwestern Montana. M. S. thesis. 72 pp.
    • Reichel, J. D. 1976. Coyote-prey relationships on the National Bison Range. M.S. thesis. University of Montana, Missoula. 86 pp. plus appendices.
    • Reichel, J.D. 1986. Habitat use by alpine mammals in the Pacific Northwest. Arctic and Alpine Research. 18(1): 111-119.
    • Reichel, J.D. and S.G. Beckstrom. 1993. Northern bog lemming survey: 1992. Unpublished report. Montana Natural Heritage Program, Helena, MT. 64 p.
    • Reichel, J.D. and S.G. Beckstrom. 1994. Northern bog lemming survey: 1993. Unpublished report. Montana Natural Heritage Program. Helena, MT. 87 pp.
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    • Renewable Resources Consulting Services, Ltd., 1976?, Study of small mammals in relation to strip mining. Progress Report. In Decker Coal Company West Pit Permit. Vol. 3. 26.4.304(10-11), 305, 306, and 307. Updated Rules Rewrite, July 1, 1991.
    • Russell, R. J. and S. Anderson. 1956. Small mammals from Silver Bow County, Montana. Murrelet 37:2-3.
    • Rust, H. J. 1946. Mammals of northern Idaho. J. Mammal. 27(4): 308-327.
    • Salonen, J. J. 1969. Experimental induction of territorial behavior in the deer mouse, Peromyscus maniculatus. M.S. thesis, Montana State University, Bozeman. 27 pp.
    • Sawyer, H. E. 1935. Studies on the rodents of Montana. M.A. thesis. University of Montana, Missoula. 111 pp.
    • Schladweiler, P. 1976. Coyote densities, small mammal population indices, and big game fawn production and survival in the various study areas. Statewide Wildlife Research. The Effects of coyotes on big game populations in Montana. Montana Dept. of Fish, Wildlife and Parks. Fed. Aid Proj. W-120-R-7
    • Schladweiler, P. 1977. Coyote densities, small mammal population indices, and big game fawn production and survival in the various study areas. Statewide Wildlife Research. The Effects of coyotes on big game populations in Montana. Montana Dept. of Fish, Wildlife and Parks. Fed. Aid Proj. W-120-R-8
    • Schladweiler, P. 1980. Coyote densities, small mammal population indices, and big game fawn production and survival in the various study areas. State of Montana Wildlife Research, Proj. No. W-120-R-11. 78 pp.
    • Schladweiler, Philip, and John P. Weigand., 1983, Relationships of endrin and other chlorinated hydrocarbon compounds to wildlife in Montana, 1981-1982. September 1983.
    • Scow, K.L. 1981. Ecological distribution of small mammals at Sarpy Creek, Montana, with special consideration of the Deer Mouse, Peromyscus maniculatus. M.Sc. Thesis. Bozeman, Montana: Montana State University. 73 p.
    • Sieg, C.H., D.W. Uresk, and R M. Hansen. 1986. The value of bentonite mine spoils in southeastern Montana as small mammal habitat. Northwest Science 60(4): 218-224.
    • Smith, D.H. 1975. An ecological analysis of a host-parasite association: Cuterebra approximata (Diptera: Cuterebridae) in Peromyscus maniculatus (Rodentia: Cricetidae). Ph.D. dissertation. University of Montana, Missoula. 177 pp.
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    • Stoecker, R.E. 1967. A population study of five species of small rodents in the Bridger Mountains of Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 32 p.
    • Thompson, L.S. 1981. Circle West wildlife monitoring study: Third annual report. Technical report No. 8. Montana Department of Natural Resources and Conservation. Helena, Montana.
    • Thompson, Richard W., Western Resource Dev. Corp., Boulder, CO., 1996, Wildlife baseline report for the Montana [Montanore] Project, Lincoln and Sanders counties, Montana. In Application for a Hard Rock Operating Permit and Proposed Plan of Operation, Montanore Project, Lincoln and Sanders Counties, Montana. Vol. 5. Stroiazzo, John. Noranda Minerals Corp., Libby, MT. Revised September 1996.
    • Treiman, E. F. 1982. Evaluation of fluoride in vegetation and mammals in the Garrison, Montana area. M.S. thesis. University of Montana, Missoula. 79 pp.
    • Trout, R.G. 1978. Small mammal abundance and distribution in the Missouri River Breaks, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 64 p.
    • Tschache, O.P. 1970. Effects of ecological changes induced by various sagebrush control techniques on small mammal populations. M.Sc. Thesis. Bozeman, MT: Montana State University. 51 p.
    • Tweten, R.G. 1984. Baseline survey of furbearing mammals within the South Fork drainage Sun River, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 63 p.
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Deer Mouse — Peromyscus maniculatus.  Montana Field Guide.  .  Retrieved on , from