The birdlife of the park has 150 species of birds including twenty species of New World warblers.
The Audubon's Warbler (Setophaga auduboni or Setophaga coronata auduboni) is a small New World warbler.
During the summer months, the park provides habitat for warblers and other birds of the northern forests.
The watershed includes rare Great Lakes marshes and floodplain forests, which serve as habitats for migratory birds such as the Prothonotary Warbler (commonly known as the Golden Swamp Warbler), as well as the endangered Mitchell Satyr butterfly.
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