This IBA encompasses the Bogus Swamp State Natural Area and adjacent areas managed by Langlade County Forest. Topography is characterized by large depressions in a gently rolling ground moraine. The flat basins consist of open and forested wetlands. There are extensive areas of open muskeg dominated by sphagnum, leatherleaf, sedges, and scattered small black spruce. Large black spruce, tamarack, and occasionally white cedar can be found around the edges where more mineral-rich water settles. The site also includes a patterned bog, an unusual feature and one of only two well-developed examples of this type in the state (WDNR 2007). Uplands are barely rolling with loamy soils, and are forested with managed young aspen and hardwoods.
The site is considered a muskeg core habitat, with up to 3,000 acres available. It contains robust populations of open bog and swamp conifer birds, and several rare or uncommon species. These include Olive-sided Flycatcher, Boreal Chickadee, and Cape May Warbler. Yellow-bellied Flycatcher, Nashville Warbler, Palm Warbler, and Purple Finch are relatively numerous here.
The muskeg cores are relatively intact and undisturbed; these are embedded in lands managed for forest production and recreation by Langlade County. Wetlands are sensitive to alterations in hydrology, fragmentation, invasive species, and disturbance from roads, motorized recreation, and forest management activities. Muskeg recovers very slowly from damage. Maintenance of these open and forested wetland communities will depend on the utilization of Best Management Practices and other sustainable forest management practices to safeguard water quality, as well as limiting motorized recreation and other disturbances in sensitive areas. Local land use planning that considers conservation needs also will be important. Managing the forested uplands for a diversity of size and age classes and an increased conifer component would benefit numerous priority species found at this site.