Many many years ago my children went to the Victoria market and gave me a birthday surprise by presenting me with a caged cockatoo. I had told them childhood stories of a cockatoo that, when someone knocked on the door, would call out, "Mum....Mum." which we used to do when there was a door knock. It would also whistle for the dog to come and then, when the dog, responded the cockatoo would say, "Get out of it." It also liked to walk along the clothes line taking the pegs holding up the clothes.
With my surprise birthday cockatoo I explained to my children that I didn't like caging birds and animals and so we went out into the country and released the bird. They were happy with that and so was the cockatoo.
In Townsville which has lots of birds, I put a stand up outside the backdoor with birdseed and water and every morning a dozen or more rainbow lorrikeets and figtree birds would come. Magpies and a kookaburra would sit on the railing to be handfed and sulphur crested cockatoos would occasionally visit for sunflower seeds mixed with the birdseed. Pigeons would come like vacuum cleaners so I used to chase them away. A downstairs neighbour angrily told me I was a bird racist and I was stupid to feed native wild birds. Given the birds were living in a suburb and not a natural environment I wasn't persuaded by that so I continued my bird racism, chasing away the pigeons and feeding the natives.
Here in Bali I put up a stand on the garden wall which I can see from the living room couch and birds come throughout the day for feed and water. Sad to see all those caged birds at the various markets waiting for someone to buy them and keep them locked up in a small cage for the rest of their lives.
While I understand the arguments for zoos I hate to see animals limited to a very small area. Even with the best modern zoos with generous space I can only think how boring life must be for primates and animals used to roaming through their habitat.