Matthew Cvetas a member of the Illinois Birders’ Forum created the following Google Maps for the state of Illinois.  It was a big project and should be useful to birders or anyone interested in exploring the great outdoors.

Maps of the Forest Preserve District access areas, trails, and facilities in northeast Illinois.

A list of state parks, natural, conservation, recreation, and fish and wildlife areas run by llinois Department of Natural Resources.

A list of Illinois outdoor areas administered by the National Forest Service, US Fish and Wildlife Service, and U.S. Army Corps of Engineers.