Iowa’s occurrence data for the silver-haired bat is thin, just 41 records total, in a state that has converted nearly all its original prairie to farmland, leaving forest, and this bat’s habitat, to a scattering of wooded corridors.
A wooded-corridor bat in a heavily farmed state
The dead and dying trees with loose, peeling bark this bat depends on for roosting survive mostly in narrow bands along Iowa’s rivers and streams, the timbered bluffs of the Mississippi and Missouri, and remnant wooded corridors tucked into farmland elsewhere. Iowa’s own records cluster hardest in June, when females elsewhere in the species’ range are settling into solitary maternity roosts to give birth. With only 41 records total, that pattern says as much about when observers are out looking as it does about the bat’s biology, but it lines up with the timing described for the species nationally: pregnant through spring, pups arriving in early summer.
Wind turbines and a migratory bat
Iowa generates more of its electricity from wind than nearly any other state, and that turbine-studded landscape sits under a bat that migrates long distances between summer and winter range. Silver-haired bats are among the species most frequently found dead at wind turbines nationally, a documented pressure tied directly to the seasonal movements that carry this bat across Iowa each spring and fall.
Status in Iowa
NatureServe ranks the silver-haired bat S4, apparently secure, in Iowa. It’s not listed as nonindigenous by USGS NAS, so it’s treated as native to its Iowa range, even though direct records here stay sparse.
Full species profile
