A conservative estimate of 85 to 90 native bird species breed regularly in this park. The list of suspected birds is more than 100. Common Loons nest annually, possibly the southernmost breeding area in Minnesota. In 2004, Ospreys nested for the first time. Nine species of warblers breed regularly in the park and three other species of warblers have been recorded nesting here.
This site supports the only known regular breeding population of Hooded Warblers in Minnesota, accounting for more than 90% of the state's population. Some of the state's highest concentrations of Acadian Flycatchers and the globally declining Cerulean Warbler also breed here. Other species of concern that breed here include the Red-shouldered Hawk, Henslow's Sparrow, Black Tern, Wood Thrush, Dickcissel and Bobolink.