This is a really interesting video I came across in Youtube from 2012. It may have been on Zoochat before, but I don't recall it. There are some interesting stories and clips in here, including video of a family of demoiselle cranes. I remember the old concrete-and-bars cages still in use for various animals when I first visited, especially the monkeys (in the video they show them for the big cats and chimps but the others were similar).