Scientific Name
Perimyotis subflavus
Family
Vespertilionidae
Global Conservation Status (IUCN)
Vulnerable
Diet
Insectivore

Tricolored Bats feed mostly on caddisflies, beetles, and other small, soft-bodied insects. They are one of the first bats to emerge in the evenings to hunt and can be distinguished by their fluttering, erratic flight.

Fun Fact: Tricolored Bats in Nova Scotia roost almost exclusively on bearded lichens (Usnea trichodea), including colonies of mothers and pups.

Appearance: Formally known as the Eastern Pipistrelle (Pipistrellus subflavus), the Tricolored Bat is named for the banded yellow and brown colors found on the hairs on their back. They weigh between four to seven grams, with wingspans ranging between eight to 10 inches.  

Habitat: This small bat is generally solitary, though females form small colonies of fewer than 35 individuals during pup-rearing seasons. They can be found in a range of roosts including tree cavities, caves, rock crevices, culverts, and buildings.

Tricolored Bats hibernate during the winter. Across most of their range, they hibernate primarily in caves and culverts. Some northern populations might migrate to southern hibernating locations.

Conservation Concerns: As a hibernating species, Tricolored Bats are vulnerable to White-nose Syndrome, with populations declining at least 90% due to the fungus. These severe declines have prompted their listing on Canada’s Endangered Species list. A petition is currently under review (as of June 2021) to list Tricolored Bats on the U.S. Endangered Species List.

Bat Conservation International Projects including the Tricolored Bat:


Approximate Range