In 2008, I actually found this aviary quite boring and disappointing in size, having read for years about the famous 1904 St. Louis Worlds Fair Aviary and how huge it was. And it appeared to be lightly populated. On my second visit in 2010, I was much more impressed; not so much with the size of it, but because it seemed to have come to life with many more birds in view. A much better photo opt experience.