The little brown bat has just 7 Iowa records from 2000 on, all research-grade iNaturalist observations and 3 of them also held in GBIF, so a handful of photographed bats, not survey specimens, make up the recent record here. NatureServe still rates the state population S4, apparently secure, though the species’ global IUCN Endangered status reflects the devastating impact white-nose syndrome has had on this species across most of its range since the disease first appeared.
September carries 3 of the dated records, with single ones in April, May, and July, and that small fall cluster fits the pre-hibernation swarm period, when bats gather near cave entrances and are briefly easier to notice. Dubuque County, on the Mississippi bluffs, accounts for 3 of the 7.
Full species profile
