Wyoming’s silver-haired bats are a genuine rarity in the record book, with only a handful of documented sightings across the state’s river corridors and refuge lands, including the Yellowstone River corridor, Seedskadee National Wildlife Refuge, and the National Elk Refuge. The state ranks this species in its rarest reporting bracket, a bat that’s easy to miss even where it lives, since it forages alone over water and forest edges at dusk and roosts hidden in loose bark rather than gathering in obvious colonies.
Nearly all of the state’s records come from GBIF rather than casual iNaturalist photos, which fits a species usually picked up by bat-detector surveys and mist-net captures instead of people spotting it by eye. Recorded activity has clustered in September, likely tracking fall migration swarms rather than a true summer peak. NatureServe lists it as vulnerable in Wyoming (S3B), a status tied to its breeding population here.
Full species profile
