Big brown bats carry a NatureServe S4 apparently secure rank in Arkansas, and the record leans toward GBIF (114 of 134 records), suggesting survey data documents this building-roosting bat more thoroughly than casual sightings alone. Ouachita National Forest’s 3 logged sightings mark the state’s top named site.
July alone accounts for 33 of the 134 records, close to a quarter of the entire year’s total, tracking the maternity-colony season, while records fall to just 2 in both February and December, consistent with reduced winter activity as the species enters periods of torpor.




