I have one question and one suggestion. First, the question of how handicap accessible is it, from what I read it's a lot of stairs (Which really pisses off handicapped people, like to the point where they just leave and go somewhere else). My suggestion is to get rid of all the bars because animal rights activists will use those to make your zoo look bad, it also doesn't help that this takes place in an old abandoned dungeon. Also just make sure that if people don't want to use aviaries they don't need to if they want to leave (I couldn't tell if the exit was in the raven exhibit or outside)