Encompassing Bogus Swamp State Natural Area and adjacent Langlade County Forest lands, this IBA features gently rolling topography and flat basins vegetated with both forested and open wetlands. Particularly significant are the extensive areas of open muskeg dominated by sphagnum, leatherleaf, sedges, and scattered small black spruce. Larger trees—black spruce, tamarack, and white cedar—are found around the edges. Uplands are forested with managed young aspen and hardwoods.
This IBA contains core muskeg habitat supporting populations of open bog and swamp conifer birds, including olive-sided flycatcher, yellow-bellied flycatcher, boreal chickadee, Nashville warbler, palm warbler, Cape May warbler, and purple finch.