Bats are essential to a healthy ecosystem, as they eat insects that are pests to trees, crops, and us. Most bats use trees as their daytime roosts during spring, summer, and fall. If you have good places for bats to hunt for food, how do you attract them to roost on your property?Dr. Joy O'Keefe , Assistant Professor and Wildlife Extension Specialist at the University Of Illinois, will speak on what makes good natural and artificial roost habitat for bats and other ways to support your local bat population.