Species: Sorex monticolus

Dusky Shrew
Species

    Pacific coast: pelage gray brown; median tine on anteriomedial edge of I1 usually large and robust; tail indistinctly bicolored; 5 or 6 pairs of friction pads on second to fourth digits of hind feet; level of pigmentation above level of median tine on I1; body size small to medium; U5 triangular, body of U1s not touching, P4 overlapping U5; zygomatic process of maxillary pointed (Carraway 1990).

    Kingdom
    Animalia
    Phylum
    Craniata
    Class

    Mammalia

    Order

    Soricomorpha

    Family

    Soricidae

    Genus

    Sorex

    Classification
    Other Global Common Names
    Montane Shrew - Una MusaraƱa - musaraigne sombre
    Informal Taxonomy
    Animals, Vertebrates - Mammals - Other Mammals
    Formal Taxonomy
    Animalia - Craniata - Mammalia - Soricomorpha - Soricidae - Sorex - species.

    Pacific coast: pelage gray brown; median tine on anteriomedial edge of I1 usually large and robust; tail indistinctly bicolored; 5 or 6 pairs of friction pads on second to fourth digits of hind feet; level of pigmentation above level of median tine on I1; body size small to medium; U5 triangular, body of U1s not touching, P4 overlapping U5; zygomatic process of maxillary pointed (Carraway 1990).

    Migration
    true - false - false
    Non-migrant
    true
    Locally Migrant
    false
    Food Comments
    Feeds primarily on insects and other small invertebrates (worms, sowbugs, molluscs, etc.). Also consumes some vegetable matter.
    Reproduction Comments
    Breeding season extends from April-August. Average litter size is about 5, but ranges up to 7 (van Zyll de Jong 1983). Information on reproduction from different parts of the range is needed.
    Ecology Comments
    Most individuals probably do not live longer than 18 months. Mean home range estimates = 1227 sq m for nonbreeders, 4020 sq m for breeders (van Zyll de Jong 1983). Apparently not territorial in breeding season; may move widely (van Zyll de Jong 1983)
    Length
    13
    NatureServe Global Status Rank
    G5
    Global Status Last Reviewed
    1996-11-01
    Global Status Last Changed
    1996-11-01
    Other Status

    LC - Least concern

    Conservation Status Map
    <img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.AB=S5&CA.BC=S5&CA.MB=S3&CA.NT=S5&CA.SK=S5&CA.YT=S5&US.AK=S5&US.AZ=S4&US.CA=SNR&US.CO=S5&US.ID=S3&US.MT=S5&US.NN=S3&US.NV=S3&US.NM=S4&US.OR=S4&US.UT=S3&US.WA=S4&US.WY=S5" alt="Conservation Status Map" style="width: 475px; height: auto;" />
    Global Range
    Alaska to southern California, east to western Manitoba, Montana, Wyoming, Colorado, New Mexico (not south-central), Chihuahua, and Durango; many populations exist on relatively isolated mountain ranges in the southern half of the range ( Hutterer, in Wilson and Reeder 1993; Smith and Belk 1996). See Alexander (1996) for information on distributions of subspecies.
    ELEMENT_GLOBAL.2.101738