Saturday, January 12, 10:00am. Each year hundreds of bald eagles over-winter in the Illinois River Valley. We dedicate this day to the appreciation of these incredible birds of prey as the Peoria Audubon Society and Forest Park Nature Center offer a presentation and tours to view Bald Eagles along the river! Forest Park Nature Center, 5809 N. Forest Park Drive, Peoria Heights, IL. For more information call (309) 686-3360.