Gray bat records in Alabama cluster tightly in the northeast corner of the state, the limestone karst country around Little River Canyon National Preserve and DeSoto State Park on Lookout Mountain, among some of the most cave-riddled ground in the eastern United States. A smaller scatter of records reaches south to Talladega National Forest. That concentration in the northeast isn’t a coincidence: almost the entire gray bat population depends on a small number of caves with exactly the right conditions.
A species built around a handful of caves
Unlike bats that scatter into hollow trees or buildings, gray bats roost almost exclusively in caves, and a large share of the species crowds into a short list of sites with the right temperature and airflow for raising young or surviving winter. That concentration makes the species unusually vulnerable: disturb or flood one of those few caves and the effect reaches far beyond a single site.
Feeding over open water
At night, gray bats fly out over rivers and reservoirs to hunt flying insects, and the lakes and streams draining northeast Alabama’s mountain country give them exactly that. Records climb sharply from May through July, when the bats are most active around their maternity caves and easiest for surveyors to document.
A species under real pressure
NatureServe ranks the gray bat S2, imperiled, in Alabama, and the IUCN lists the species as globally Vulnerable. Disturbance at roosting caves and changes to the rivers bats forage over are the main pressures conservation work continues to target in the state.
