One interesting thing about going to historical zoos is how seldom the buildings, built to house animals, gave any consideration to the animals at all.

Decimus Burton, the first architect of the zoo is on record as being quite upset that his brilliant designs, made so people can appreciate the animals, were being thrown away because, as it turned out, they were also killing the animals that lived there.

While not as bad as that, this aviary has also reached the end of its useful life and there were signs up about how the zoo planned to replace it soon.

The more we learn, the more we realize just how wrong we were when we thought we knew what we were doing. I think this is true in all fields, but more apparent in the world of zoos.