WI DNR - Horicon Marsh Wildlife Area Home Page Current Conditions at Horicon Marsh Wildlife Area Canada geese numbers are building at Horicon Marsh. As of Oct. 19, Some 150,000 birds were present on the marsh, as well as many ducks and other marsh birds. Mild temperatures have slowed the migration at this time, but as the peak of fall colors approaches in southern Wisconsin its a great time to get outside and watch the fall birds on Indian summer days. Public naturalist programs are conducted on the south end of the marsh every Sat. and Sun.
All programs are free and open to the public.