Big Brown Bat
Big brown bats (Eptesicus fuscus) are known for their propensity to roost in anthropogenic structures. This species is an important predator of certain agricultural pests.
Kootenay Bat Project
- From Alaska and northern Alberta to northern South America.
- Populations occur throughout Columbia Basin
- Occurs in a wide range of habtiats (upland, wetland, dryland and riparian)
- Can occur at high elevation coniferous forests
- Maternity roosts found in trees, caves, and anthropogenic structures
- Caves, buildings and mine structures are used for hibernation
- Mating occurs in fall and intermittently throughout winter
- Females form maternity colonies of up to 75 individuals. Females give birth to their single young (two young in eastern North America) after gestation of about 60 days. Young are volant (able to fly) in about 3 to 6 weeks
Listing and Date
Threats to Species
- Loss of foraging and roosting habitat (forestry, reservoir creation, mine deactivation)
- Disturbance at maternity roosts and hibernation sites
For more information on this species, visit:
The BC Species and Ecosystem Explorer where you should enter "Big Brown Bat" or "Eptesicus fuscus" in the Species Name field.