Amery's preschool group went last week and I saw that this aviary is open for free Oct. 1-4. It's like a zoo with only birds and didn't feel too big to handle with a 5 year old, 3 year old and 1 year old. The aviary is in Liberty Park where there is also a fun-looking playground. Just thought I'd pass the info on. Their website is www.tracyaviary.org.