Dead animals in south florida are pretty easy to find, just look for the vultures. I probably found at least a hundred dead iguanas after the first real bad cold spell. They like to sleep on branches that overhang water, so when they froze and fell into the water, they drowned. There were bloated carcasses floating under every big tree that overhangs the water. Native turtles were using the dead iguanas as basking spots. Of course, iguanas were waaay more common that burms, but I could see turning up quite a few dead ones if you knew where to look. 99 does seem a little out there though. How many were radio tagged?