Eagle Optics Day is also today from 10 am – 3 pm. The largest independent dealer of high quality binoculars, scopes, and all types of optic equipment will be on hand at the Nature Center. Equipment will be on display and experts will be available all day to answer questions and give guidance. For information about Eagle Optics Day call 773-539-6793. A portion of sales for the day goes to support the programs of the Chicago Audubon Society.