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Horicon National Wildlife Refuge anchors the northern two-thirds of the largest freshwater cattail marsh in the US at 22,000 acres, drawing over 300 bird species year-round. Its vast protected wetlands funnel massive migrations, especially Canada geese, sandhill cranes, ducks, and rare whooping cranes. This federal sanctuary stands out for raw scale and diversity unmatched in the Midwest.
Prime spots include Hwy 49 for roadside flocks, the Auto Tour Route with boardwalk access, and boat tours into hidden channels. Hike 5-10 miles of trails for warblers and woodland songbirds in spring and fall. Paddle the canoe trail or join seasonal festivals for guided hikes and banding demos.
Fall rules for sheer bird volume; spring and late summer excel for variety. Expect marsh mud, insects, and crowds at peaks—prepare with sturdy gear and distance from wildlife. Visitor center on Cty Rd Z provides exhibits and updates daily.
Local Horicon Marsh Bird Club hosts events and shares eBird data, fostering a tight-knit community of spotters. Refuge staff and DNR rangers offer insider tips on crane roosts and owl spots. Festivals like the Bird Festival unite enthusiasts around this working wetland's conservation legacy.
Plan visits for fall migration from mid-September to mid-November when Canada geese, sandhill cranes, and ducks peak in numbers. Check eBird for real-time sightings and refuge conditions before arrival. Book boat tours ahead via Horicon Marsh Boat Tours for May-October slots; no reservations needed for drives or trails.
Arrive at dawn or dusk for active birds and fewer crowds. Dress in layers for variable marsh weather, including fog and wind. Download the Horicon Marsh Trail Map and bring offline maps, as cell service dips in remote spots.