Four species of tree squirrels can be found in Illinois: The fox squirrel, the gray squirrel, the red squirrel and the southern flying squirrel. All are small mammals characterized by a long, bushy tail, prominent ears, and long hind feet and reside in wooded areas.
Besides consuming seed, they may damage bird and wildlife feeders by chewing on them. Squirrels can cause damage to your home by chewing on wood or vinyl structures, by chewing on electrical line, or by getting into your walls to chew on interior wiring. As squirrels find their way into your home, they can also introduce fleas.