Northern Long-eared Bat (Myotis septentrionalis), is listed as Federally Endangered and State Threatened. It is usually a dull or light brown color, with a gray underbelly. Habitat in the summer may include day roosts in tree hollows, crevices and under the bark of dead, dying, or live trees, in buildings, and in caves at night. Hibernation sites are often in mines, caves, or other suitable hibernacula, and this species may co-hibernate with other species. Foraging habitat includes closed-canopy forests, forested hillsides and ridges, and small ponds or streams. Mating occurs in the fall and fertilization is delayed until the spring. One young is produced between May and July. See the species guidance document for avoidance measures and management guidance from the Natural Heritage Conservation Program and the USFWS Northern Long-eared Bat for interim tools and guidance documents.