Lived in Chicago the first 20+ years of my life. Brookfield zoo also has chickens, goats, ducks, etc. in a Children's petting zoo format. I don't know if Lincoln Park zoo is still free admission but Brookfield Zoo costs a pretty penny if you aren't a member/ family member, plus parking fee, etc. etc. It is bigger and has more things to see. Better food,snack offerings.Also some free parking areas - my brother knows which is which, I don't!
BTW moved out of Chicago to find a well (with very rusty water), a septic tank(what???) gravel road, and house only half finished when we had to move in to basement (with 11 dogs) because Chicago house sold to the first looker. Who knew?
BTW I was breeding and showing dogs hence the need to move out of the city.
Plus Chicago neighbors wanted us out not "their kind,"(religion) etc. Never looked back. Living here over 50 years- much better neighbors. l