The decline of the Indiana bat is attributed primarily to commercialization of their hibernating caves, pesticides and human disturbances. Changes in cave climate, caused by impeded airflow, have made many winter bat shelters unsuitable.
Indiana bats hibernate during the winter in caves and mine shafts which provide a relatively constant climate. Approximately 85 percent of the population hibernates in only six caves in Indiana and Kentucky.
Considered by the USA Federal and State authorities as endangered. The IUCN considers Myotis sodalis as Endangered.