Bats in Wisconsin

Some of the bats in Wisconsin will migrate to a different state down south during winter as their primary food source – insects – becomes scarce when it gets colder. Bats known to do this are generally tree living species like the Hoary Bat, the Eastern Red Bat, and the Silver-haired Bat.
The other bats prefer dwelling in caves and will hibernate during the harsher months. These locations, referred to as “hibernacula,” generally include caves, crevices within rocky structures, and abandoned buildings.

Yes, all species of bats found in Wisconsin are protected. This is because, within the state, the Big Brown Bat, the Little Brown Bat, and the Tricolored Bat are all threatened, and the rest are at risk.