Coronavirus (COVID-19) Notice
Although most refuge lands and outdoor spaces have remained open for the public to enjoy, we ask that you recreate responsibly.

  • Check alerts and local conditions on this website and call ahead for current information. Operations vary based on local public health conditions.
  • Consistent with CDC recommendations, all visitors (age 2 and older), who are fully vaccinated are required to wear a mask inside of federal buildings in areas of substantial or high community transmission.. All visitors who are not fully vaccinated must continue to wear masks indoors and in crowded outdoor spaces.
  • Most importantly, stay home if you feel sick and continue to watch for symptoms of COVID-19 and follow CDC guidance on how to protect yourself and others.


  • Hiking trail 2

    Refuge Auto Tour and Hiking Trails

    3 mile driving loop and hiking trails.

    Horicon Refuge Trail Maps

  • monarch_caterpillar

    Have Monarchs Arrived at Your House?

    Keep your eyes peeled. A great citizen science project tracks monarchs moving north. Report when you see the first butterfly, egg or larva.

    Track their progress.

Public Use Information

Facilities Updates

Refuge auto tour off Hwy 49 is open to vehicles. Visitor Center: Temporarily closed. America the Beautiful passes will not be available until Jan 1 2022. Discovery Trail open for hiking and porta potty available. Main Dike Rd: now open to vehicles as well as hiking and bicycling. Please note that starting October 14th there will be construction that will impede hikers and bicyclists from going entirely across the western portion of Dike Rd. Old Marsh Rd: currently closed for hiking and bicycling. Refuge open for fishing at bank fishing locations (Main Dike Road, Ledge Road, and Peachy Road). See maps for more information. Please remember to practice social distancing and avoid trails and parking areas that may be experiencing higher visitor use. Stay safe and enjoy! For more information email or call 920-387-2658.

Refuge Map

Public Programs and Events


Birding Information

Mixed Ducks Taking Off From a Wetland

Horicon National Wildlife Refuge Fall 2021 Migration Report 11/17/2021 This is week ten of waterbird surveys at the refuge for the fall migration. Last weekend SE Wisconsin had a brief winter warning that brought colder temperatures and about ½” of snow. Most of the marsh froze over for 3 days before thawing with open water today. This front pushed many birds south last weekend. Canada goose numbers were lower this week - around 26,000. Despite the cold and temporary ice, the geese continue to make several flights out of the marsh each day to feed. Geese and swans were the most numerous on the survey. Dabbling duck numbers dropped significantly on this week’s survey –around 18,000. Top species (listed in order of abundance) seen in the thousands were mallards and green-winged teal. Northern shovelers, Northern pintails, gadwall, American wigeon, and black ducks were counted in the hundreds. Diving duck numbers dropped significantly this week – around 280. Buffleheads and ruddy ducks were around 100. Hooded mergansers, redheads, ring-necked ducks, and canvasbacks were counted with less than 100 of each species. Other sightings to note •Nearly 1,500 tundra swans were seen. Large flocks were seen along Hwy 49. Open your window and listen for the whistling sound they make. •More than 10,000 sandhill cranes are in the area right now. You can watch their daily flights in and out of the marsh. Flocks of 500+ can be seen feeding in fields close to the marsh during the day. Sunrise and one hour before sunset are the best times to see large flocks’ transition between the roosting and feeding grounds. Check along Hwy 49 for a great variety of waterfowl – including trumpeter and tundra swans. For quieter viewing, drive Ledge Road or Main Dike Rd. These areas offer close-up views of waterfowl in full plumage. **No survey will be completed next week – Nov 21-27. Please note gun deer season opens state-wide on November 20th through 28th and refuge auto tour will be closed to vehicles. Happy Birding!

Waterbird Survey Blog

Trapping Information

Unit maps and auction information.

Visitor Activities
Location / Hours

Location & Hours

Horicon National Wildlife Refuge Headquarters/Visitor Center W4279 Headquarters Rd. Mayville, WI 53050. Phone: 920-387-2658 Refuge public use areas are open daily from dawn to dusk. Visitor Center - Temporarily closed. America the Beautiful Passes(annual,senior,access etc. are unable to be issued at our facility at this time. Please visit to purchase or call ahead to federal sites you plan to visit.

Plan Your Visit

About the Complex

Horicon Leopold Complex

Horicon National Wildlife Refuge is managed as part of the Horicon Leopold Complex.

Read more about the complex
About the NWRS

National Wildlife Refuge System


The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America's fish, wildlife, and plants.

Learn more about the NWRS