The eastern small-footed myotis (Myotis leibii) is one of the least known bats in eastern North America. We document the first record of the species in Illinois, and discuss possible reasons it has not been reported in the state until now.
Steffen, Bradley J., Osborne, Tiffany L., Carter, Timothy C. and Feldhamer, George A. "The First Record of the Eastern Smallfooted Myotis (Myotis leibii) in Illinois." (Jan 2006).