Before rescuing a bird that appears injured or abandoned, check a resource to determine how to deal with the situation.
A good resource is Chicago Bird Collision Monitors, an all volunteer bird conservation project that operates under the auspices of the Chicago Audubon Society.
If you find an injured bird, you can call the CBCM hotline at 733-988-1867 for advice. For more information: www.birdmonitors.net.
Other organizations in the surrounding area include:
Flint Creek Wildlife Rehabilitation (offers flow charts to determine care of wildlife)
Cook and Lake Counties, IL
Fox Valley Wildlife Center
In addition, the Illinois Department of Natural Resources and the Indiana Department of Natural Resources issue permits to individuals qualified to rehabilitate wild birds: