Hortonville Bog State Natural Area

Hortonville Bog is one of the best bogs in southern Wisconsin and contains an open ericaceous bog with a very deep sphagnum layer. Dominants are leather-leaf and Labrador-tea. Poison sumac is abundant throughout the site. Although there is no open water, the bog is very spongy. Surrounding the bog is an advancing ring of tamarack and black spruce in all age and size classes. To the south is a wet-

mesic forest dominated by tamarack and white cedar. The bog contains several species of birds indicative of northern bog communities: winter wren, Canada warbler, Nashville warbler, white-throated sparrow, sharp-shinned hawk, northern waterthrush, and Lincoln's sparrow.