MADISON (WKOW) — The Wisconsin Department of Natural Resources celebrated Endangered Species Day on May 15.
The day recognizes successful recoveries like bald eagles and trumpeter swans while highlighting species that remain at risk. Wisconsin has 487 native animal species considered at risk, including the little brown bat, the federally endangered Karner blue butterfly and rusty patched bumble bee, and nearly half of the state’s 50 native mussel species.
More than 20% of Wisconsin’s 2,300 native plant species are also at risk.
“Wisconsin’s rarest species continue to need our help, and the work of department staff, along with many collaborators across the state, helps conserve these species for the future,” said Drew Feldkirchner, DNR Natural Heritage Conservation Bureau director. “Volunteers and donors to the Endangered Resources Fund continue to have a tremendous positive impact. Together, we can ensure a better future for Wisconsin’s biodiversity.”
The DNR’s Bureau of Natural Heritage Conservation works with partners on recovery, conservation and habitat management for rare and endangered species. Last year, the DNR completed 7,307 acres of prescribed burns and 6,842 acres of invasive plant control at state natural areas, which make up only 1% of the state but serve as critical sites for rare species.
Researchers have been studying wood turtles, a rare species that can be difficult to spot, using donations to the Endangered Resources Fund and a federal grant. The data will help protect and restore their habitat across the Upper Midwest in the coming years.
Nearly 2,600 volunteers worked at state natural areas and participated in rare species monitoring programs in 2025. Donations to the Endangered Resources Fund support training, coordination and data analysis for rare species conservation and come from income tax donations, specialty license plates and direct gifts.