image of a cluster of big brown bats
Get Involved

This year's Great Wisconsin Bat Counts are June 2-4 and July 28-30! You can enter your bat roost count data online here.
The 2017 Wisconsin Bat Festival will be held August 26, at the Mitchell Domes in Milwaukee, Wisconsin.
Stay tuned for more details!
Sign up to receive email updates from the Wisconsin Bat Program:

image of a hoary bat
  • Help monitor bats in Wisconsin!
  • Already surveying bats? Log in to submit your data
  • Conducted a summer roost count?Submit your data!
image of person removing bat from a net
image of a bathouse

This site is produced in conjunction with the Wisconsin Aquatic and Terrestrial Resources Inventory and sponsored by the Wisconsin Department of Natural Resources. The information presented on this site is subject to the Wisconsin Department of Natural Resources' Legal Notices, Disclaimers, and Terms of Use.