Big Oaks NWR has been designated as a Globally Important Bird Area because of its value to migratory birds. Located five miles north of Madison on Highway 421. Portions of the refuge are open for wildlife observation, photography, hiking, fishing, hunting, interpretation, and environmental education.
Mid-Apr-Nov: Mon & Fri, 2nd & 4th
Mandatory briefing and Access fee permit required ($3 daily, $15 annual); fee waived for holders of Migratory Bird Stamps, Interagency Access Pass, Interagency Senior Pass.