Located in Juneau County, this 44,000-acre refuge is home to the world's largest population of endangered Karner blue butterflies. Sandhill cranes, migrating waterfowl in fall, wild turkeys, bald and golden eagles in winter; shorebirds and songbirds in spring. Browse in our Visitor Center or take a walk along the two new boardwalk loops that take visitors through a mosaic of habitats on the refuge. Walk above the water of the wetlands, through the prairies and savannas before returning to the visitor center. Hiking/skiing trails, observation towers and auto routes provide easy access.