Eastern Pipistrelle (Pipistrellus subflavus)

Group Bats
Code AMACC03020
Order Chiroptera
Family Vespertilionidae
Author (F. Cuvier, 1832)
Rank G5 (definitions)
Occurrence P (definitions)
Scale N (definitions)

County List:

Western UP Ontonagon, Keweenaw, Iron, Gogebic, Houghton, Baraga
Eastern UP none
Northern LP none
Southern LP Berrien

Rule:

Mixed Forested/Nonforested Landscapes

Foraging and Roosting Habitat Requirements may be distributed across the NEIGHBORHOOD

Foraging Habitat:
      Grass
      or Upland Brush
      or Residential
      or Pond
      or River
      or Edge
      or Riparian

Roosting Habitat:
      Living Cavity Tree
      or Man-made Structure - Building
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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, Residential, Pond, River
Special FeaturesMan-made Structures, Living Cavity Trees, Edges, Riparian

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Literature:

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

Eastern pipistrelles in southern states use caves as maternity roosts, but caves and mines in the Great Lakes area are simply too cold in the summer. Our pipistrelles consistently seek warmer sites, such as barns or possibly hollow trees.

This bat forages over streams and ponds and at the forest-field edge but avoids dense unbroken forests.

The diet consists of small insects 4-10 mm long, and includes beetles, flies, leafhoppers, and the occasional moth or flying ant.

Colonies disband by late summer and the bats migrate a short distance, less than 30 miles to a hibernaculum.


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 woods near water, crevices in cliffs, buildings, caves. Avoids deep woods. Commonly roosts in trees during summer days.

Special Habitat Requirements: Warm, draft free, damp sites for hibernation, open woods.


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

Habitat Preferences: In winter, the eastern Pipistrelle generally hibernates in substantial, insulated shelters such as caves and mine tunnels. Occasionally in the northern parts of its range this bat may also winter in storm sewers or even hollow stumps. They are creatures of habit and return to these same wintering retreats year after year. In summer, eastern pipistrelles move to summer roosts either in small sex-segregated groups or singly. These shelters, used in daytime after nightly forays for food, are generally in the vicinity of winter quarters but can be as far away as 85 miles. Shelters may occasionally include sites in caves and mine tunnels but more usually in attics of buildings, crevices, and even tree foliage. Eastern pipistrelles use caves for swarming purposes midway between late evening and early morning forage flights. Insect hunting grounds are near treetops and along forested edges of fields and waterways.