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Photo by: N. J. Czaplewski

Habitat: The animals roost in crevices on cliff faces or in buildings.

Diet: They forage mostly on large moths.

Description: The big free-tailed bat is the largest bat in Colorado. The dorsal surface is pale reddish to dark brown; the ventral surface is slightly paler. The hair is bicolored with the bases nearly white. The ears are united at their bases and when laid forward extend well beyond the nose. Measurements are: total length 125-140 mm; length of tail 48-54 mm; length of hindfoot 14-16 mm; length of ear 9-11mm; length of forearm 58-64 mm; weight 12-18 g; wingspan 417-436 mm.

Range in Colorado: Only five scattered records exist from Mesa, Otero, El Paso, Gunnison, and Weld counties, with the northernmost from Greeley (Armstrong 1972, J. Fitzgerald et al. 1989).

Status: This species is not listed.

County Occurrence Map

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Species Occurrence Tool

(*) NDIS has no county occurrence data for fish at this time.

Big Free-tailed Bat NDIS Maps
  No Big Free-tailed Bat maps available!




Big Free-tailed Bat Specific Links
  GAP Habitat Map


General Wildlife Links
  Colorado Audubon
  Colorado Birding Society
  Colorado Field Ornithologist's
  Rocky Mnt. Bird Observatory
  TNC Migratory Bird Program