WashU researchers at Tyson Research Center use acoustic recorders to detect bats.
Not-so-spooky sounds: Audio recordings help ID urban bats (Links to an external site)

WashU researchers at Tyson Research Center use acoustic recorders to detect bats.
Wildlife of greater St. Louis area comes into focus in new biodiversity project. The St. Louis Wildlife Project is a collaboration between St. Louis College of Pharmacy and the Tyson Research Center at Washington University in St. Louis. The project aims to quantify biodiversity and improve the understanding of wildlife ecology in the greater St. Louis area.