Sunday, March 24.   1-3 p.m.   Thorn Creek Nature Center.   $10 per person.  All ages.   Registration required by Monday, March 18.   708.747.6320.

Tracks can be clues to wild animals’ identities and behaviors. Discover how animals survive through the different seasons.  We will walk the trails searching for tracks and other animal clues.  Bring home your own track replica. Program is sponsored by Thorn Creek Audubon Society. Participants should be prepared to walk more than 1 mile outdoors on natural surface trails across uneven terrain.