Least Shrew (Cryptotis parva)

Group Shrews and Moles
Code AMABA04010
Order Insectivora
Family Soricidae
Author (Say, 1823)
Rank G5 (definitions)
Occurrence P (definitions)
Scale S (definitions)

County List:

Western UP none
Eastern UP none
Northern LP none
Southern LP Cass, Ionia, Branch, Barry, Berrien, Calhoun, Clinton, Eaton, Ingham, Jackson, Kalamazoo, Kent, Shiawassee, Wayne, Hillsdale, Van Buren, Lenawee, St. Joseph, Ottawa, Oakland, Monroe, Livingston, Washtenaw, Allegan

Rule:

Nonforested Landscapes

      Grass
      or Upland Brush
      or Savanna
      or Fields/Pasture
view decision rule term definitions

Habitat List:

Habitats Regen Sap Pole Sm Saw Lg Saw Uneven
Aspen nonononono-
Paper Birch nonononono-
Oak nononononono
Assorted Hardwoods nononononono
Northern Hardwoods nononononono
Spruce/Fir nononononono
Hemlock nononononono
Jack Pine nononononono
Red Pine nononononono
White Pine nononononono
Conifer Plantations nonononono-
Mixed Upland Hardwoods nononononono
Mixed Northern Hardwoods nononononono
Mixed Upland Conifer nononononono
Mixed Pine nononononono
Swamp Hardwoods nononononono
Balsam Poplar & Swamp Aspen & Swamp Birch nononononono
Bottomland Hardwoods nononononono
Tamarack nononononono
Northern White Cedar nononononono
Black Spruce nononononono
Mixed Lowland Hardwoods nononononono
Mixed Lowland Conifer nononononono
Non-ForestedGrass, Upland Brush, Savanna, Fields/Pastures
Special Featuresnone

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Literature:

Kurta, A. 1995. Mammals of the Great Lakes Region. University of Michigan Press, Ann Arbor. 376 pp.

Most shrews prefer moist or even wet habitats, but this species is an exception, favoring dry upland areas instead. The least shrew is most common in meadows, old fields, weedy areas, and along fencerows; a dense cover of grasses and/or herbaceous plants is always present. This shrew rarely visits woodlands or damp lowlands.

The most important foods are adult insects, caterpillars, beetle larvae, and earthworms but this insectivore also takes centipedes, slugs, and sowbugs.


DeGraaf, R. M. and D. D. Rudis. 1986. New England wildlife: habitat, natural history, and distribution. GTR NE-108. Broomall, PA:USDA, Forest Service, Northeastern Forest Experiment Station. 491 pp.

Habitat: Open grassy areas with or without scattered brush, salt marshes, woodland edges.

Special Habitat Requirements: Loose soils for tunnels (often uses runways of larger mice and shrews).


Baker, R. H. 1983. Michigan Mammals. Michigan State University Press, East Lansing, MI. 642 pp.

Habitat Preferences: The least shrew is reported from a variety of open and semi-open environments. It can be chiefly expected in grasslands and fallow fields which contain stands of annual and perennial grasses and forbs. It also thrives in marsh, shoreline areas, orchards, brushy edges of woods, shrubby fencerows, and even in moist woods. Efforts have been made to trap these small insectivores in all of the above Michigan habitats, especially in grassy areas, where many of the small number of Michigan specimens have been obtained.