International Beaver Day is observed every April 7th to raise public awareness of the ecological contributions made by this keystone species.
Beavers are one of the most powerful nature‑based solutions we have when it comes to climate change and other ecological crises. They reduce flooding, store water during drought, support threatened and endangered species, and create natural firebreaks. It’s hard to name another species with a more impressive ecological résumé.
As a keystone species, beavers play a crucial role in shaping their environment. Through dam-building, they establish ponds and wetlands, creating vital habitats that support more than 75% of Wisconsin’s wildlife species. Beaver ponds and wetlands provide:
- Fish, including trout, with a place to rest, an abundant supply of aquatic insects, cool water in the summer, and deep pools for winter refuge.
- Ducks, swans, geese, and herons with the habitat and food sources required to raise the next generation.
- Deer with lush shrubby plants and aquatic vegetation to forage
- Songbirds with abundant insect populations and diverse vegetation for nesting sites.
- Bats with abundant insects and roosting spots.
- Insects, including important pollinators, with appropriate conditions to support high levels of biodiversity.
International Beaver Day underscores the ecological importance of beavers and reminds us to advocate for the scientific management of beavers in order to maintain healthy watersheds across Wisconsin.
Sierra Club Wisconsin’s Wildlife Team Celebrates Beavers
The Sierra Club Wisconsin Chapter Wildlife Team members have been very “busy beavers” leading up to International Beaver Day this year! This is how we have been showing up for beavers in Wisconsin in 2026:
- We have been advocating for science-based natural resource management, with our seat on the Department of Natural Resources Beaver Management Plan Committee, represented by team member Amy Mueller, focusing on beavers as one of the most powerful nature‑based solutions to the ecological crises we face.
- We are advocating for the DNR to have Dr. Emily Fairfax, one of the nation’s leading experts on beaver-driven ecohydrology, review the draft Beaver Management Plan, fact-check scientific claims, and provide the latest peer-reviewed research at no cost to the State of Wisconsin.
- This will help ensure that the plan is grounded in the best available beaver science, reflects current ecological understanding, and positions Wisconsin to manage beavers in a way that supports biodiversity, climate resilience, and healthy watersheds.
- Check out Dr. Fairfax’s presentation to the Beaver Management Plan Committee here.
- We encouraged Wisconsinites to share their thoughts on the beaver management with the DNR during the public comment period earlier this year.
- We commented on the U.S. Department of Agriculture’s analysis of the “Beaver Damage and Conflict Management in Wisconsin”. We urged a pause on the program that kills beavers for the stated purpose of protecting coldwater fisheries, since extensive scientific research demonstrates that beaver ponds enhance habitat and survival for juvenile brook trout, and no public entity supports this program.
- We spoke to the Natural Resource Board at their February meeting regarding the importance of beavers, a new beaver management plan, and Dr. Emily Fairfax’s presentation.
- Today, we created a social media blitz on beavers as a keystone species for International Beaver Day.
- We have written letters to the editor all over the state, spreading the word about the importance of beavers- here is one from the Cap Times!
- We have updated our Beaver web page.
- We joined Holley Muraco at Something Wild to celebrate Pixar's movie, Hoppers, which uplifts beavers as keystone species.
And More Beaver Fun in April
Come see us at the Madison Bird & Nature Festival on Sunday, April 26th. We will be tabling all afternoon with fun, beaver-focused children’s activities and trivia. Please plan to stop by and test your beaver IQ!
Stay tuned for more opportunities to support beavers and their benefits as a keystone species!
The Department of Natural Resources will be releasing its draft Beaver Management Plan this fall. Following the release of the draft, there will be a comment period. When the plan is finalized, it will be voted on by the Natural Resources Board. Get ready to make your voice heard!