Townsend’s big-eared bat is a cave- and mine-roosting specialist, and its 105 Idaho records cluster around the Sawtooth National Recreation Area, the Idaho Panhandle National Forests, and the Snake River Plain, a spread that tracks known hibernacula across very different parts of the state rather than one core range.
Records spike to 26 in November, likely tracking fall hibernacula surveys as colonies settle in for winter, though the overlay’s own seasonality field flags the pattern as not well documented given how few records exist outside that survey window. NatureServe ranks the species S3, Vulnerable, in Idaho, reflecting how vulnerable a colony is to disturbance at a single known roost.
Full species profile
