Tricolored Bat (Perimyotis subflavus) formerly Eastern Pipistrelle, a Threatened species in Wisconsin, is usually a yellowish color, but can vary from dark brown, pale yellow, to almost orange as its individual hairs are tricolored. This species typically hibernates in caves, mines, or other suitable hibernacula, and does so singly or in small groups. While little is known for certain about their daytime and summer roosts, they have been found roosting under bridges, on buildings, and in trees and tree foliage, especially oaks. For foraging, tricolored bats prefer habitat such as forest edges and waterways. Most mating occurs in the fall with delayed fertilization. Twin pups are born in the spring. See the species guidance document for avoidance measures and management guidance from the Natural Heritage Conservation Program.
