Big brown bats carry a NatureServe S3 vulnerable rank in Louisiana, a more cautious read than the species gets in many other states, where it’s often rated secure; Kisatchie National Forest’s 2 logged sightings anchor the state’s top named site for a bat that regularly roosts in buildings as well as tree cavities.
Records stay low and fairly flat across the year, two to six sightings most months, with no clear seasonal peak and December dropping to zero, a pattern that fits a modest, evenly-distributed record rather than one driven by a single concentrated survey or migration window.
Full species profile
