Kentucky’s occurrence data hold 27 records of the gray bat, a species whose entire life ties to a small number of caves. That low count fits an animal that spends most of its time hidden underground, out of sight of casual observers.
Built around Mammoth Cave’s karst
Gray bats are cave obligates, and few places in their range carry more weight than the limestone cave systems of Kentucky’s Pennyroyal Plateau, where Mammoth Cave National Park sits. A colony there, or in a similar cave, depends on very specific conditions of airflow, temperature, and passage size. The bats then fly out each night to forage over the Green River and other waterways nearby, which is likely why records also turn up around Daniel Boone National Forest’s streams and the reservoirs at Land Between the Lakes.
A narrow margin between shelter and open water
This bat needs both pieces at once: a cave that meets its exacting roost requirements, and open water nearby where flying insects concentrate. Break either link, a blocked cave entrance, a silted stream, cleared riverside trees along its commuting route, and a colony that has used the same cave for generations can lose it fast.
Status in Kentucky
The gray bat is native to Kentucky and isn’t flagged as nonindigenous by USGS NAS. NatureServe ranks it S2, imperiled, reflecting a species whose fate in the state rests on a small number of well-guarded caves.



