From time to time since their reintroduction, we've heard about falcons in multiple areas around the city, including the Uptown Theater and Evanston Library.
Did you know that there's a nesting pair at UIC (University of Illinois - Chicago)? They had babies again this year, and the little ones should be flying soon. You can watch them on webcam here (if they're in view). If you're lucky, maybe you'll even get to see them in action.