The Illinois Ornithological Records Committee IORC recognizes around 450 species as native to the state of Illinois. The wild turkey, ruffled grouse, and sharp-tailed grouse have been extirpated from the state.
One would find beautiful bird species scattered throughout the state. Common birds in northern Illinois include the American goldfinch, blue jay, and northern cardinal. The downy woodpecker, prothonotary warbler, and barred owl can be spotted in southern Illinois, mostly in summer. Some common birdwatching sites include the Giant City State Park, Morton Arboretum, and the Eldon Hazlet State Park.
The northern cardinal has been the state bird of Illinois since 1929.