Took the kids here for the free day a few Sundays ago. There was a line, but it went quickly and a man from the Aviary was out there with a very cool owl.
Kids of various ages enjoyed it and so did I. It's really well-organized and beautiful. I think we may make it a regular stop now. If you live around here and haven't been lately, you have to see it.
Great building and nice gift shop. Parking was a little bit of a hassle, but I would be better prepared next time. I didn't find out until later there is a small lot on the side.