The Cedarburg Bog system is made up of about 2,200 acres that include seven or eight plant communities like conifer and hardwood swamps, sedge meadow, marsh, several lakes, fen, and upland forests. In addition, amphibians and reptiles such as the Blue spotted Salamander, eastern milk snake and snapping turtle can be found. Common mammals include the opossum, masked shrew, little and big brown bat, coyote and white tail deer. Birds that make their home in the Bog include northern cardinal, red-tailed hawk, wild turkey, common yellowthroat warbler and wood duck, among others that use it as a stopover during migration. There is public access at the north and south ends of the bog. The UWM Field Station trails are only open to the public for group use arranged in advance or at public events. Please do not harass or harm the birds, plants mammals or amphibians you encounter.