Bat Nation

05/10/2026

04/24/2026

Of the eight bat species found in Wisconsin, four are state-threatened. One of these, the little brown bat (Myotis lucifugus), is showing rebounding numbers, thanks in part to the habitats found in state natural areas.

In summer, little brown bats may roost in tree snags, bat houses and buildings across Wisconsin. But come fall, many of them head to a few SNAs, where they can find very specific habitat to use from October through April.

Unlike the other examples on this list, however, the bat habitat at SNAs isn't a holdover of Wisconsin's native landscapes. It's a byproduct of industrialization – abandoned mines, to be specific.

Two large mines in particular, both within state natural areas, provide the vast majority of shelter for little brown bats overwintering in the state. Despite being relics of industry, these sites offer ideal conditions critical to a significant proportion of the nation's little brown bats.

Learn more about Wisconsin's State Natural Areas and the remarkable species they help protect in the latest issue of Wisconsin Natural Resources magazine: https://issuu.com/wisconsinnaturalresources/docs/wisconsin_natural_resources_magazine_spring_2026/s/154416529

Photo Credit: Heather Kaarakka

03/20/2026

Bat of the week

03/20/2026

Happy Spring/Fall Equinox. ☀️

📸 Yushi & Keiko Osawa

03/12/2026

Bat pups are born with big hind limbs. But why? ☟
These big feet help them cling to their mothers during flight. This is an extremely important skill to have as a fall would lead to almost certain death. They also use their TEETH to bite the ni***es of their mothers and stay attached during flight. Ouch!

Hemant/ iNaturalist

03/05/2026

After a successful big brown bat eviction, this is what we want to see!

02/24/2026

It’s that time of the year for our hibernating bats.
Always remember do not touch/ pick up bats. Have a professional involved instead.

02/18/2026

02/10/2026

🦇 Little Brown Bats are widespread across North America. "Myotis" is the genus they belong to (Myotis lucifugus) and it means "mouse-eared". It is still correct to call them a Little Brown Bat - using "Myotis" is just a little more descriptive.