lordpotato What's going on with the bats that changes their behavior and causes them to fly out into the winter and die?
The mammal transition has begun.
dead_cat It's thought that something about WNS effects their hibernation, causing them to burn through their fat stores too fast. At the point where they start risking the winter cold, it's gotten to the point where it's either that or starving to death. White Nose Syndrome is poorly understood, and it's not known if the fungus is causing the problem, or is simply taking advantage of the sick bats' weakened immune system.