I am so sad that this has happened at my nearby zoo in Knoxville, TN and I just wanted to share it with someone I knew would sympathize. 33 reptiles (out of 52 at the zoo) passed away overnight, and they have no idea why; they tried to resuscitate but were unable, and many breeding programs and many severely endangered species have been lost. It's so darn sad and the people who worked with these animals are devastated. (I was going to link you the story but can't post links in asks sorry!)
Yeah, I saw that. It’s really awful, and as far as I can tell from some of the face book discussions they still have no idea what happened. They’ll probably be doing necropsies on them (animal autopsies) and want to get all of them done before they announce a cause, unless there’s something unrelated to the necropsies that ends up indicating what happened. It’s definitely a devastating incident and those keepers must feel so bad that they couldn’t do anything or even be there to try to help.