Couldn't they just re-cluster when it cools down again? Isn't that what they do anyway when the weather does that stupid thing it does around here where it bounces back and forth between freezing and 70 all winter? I know you are colder in general, but seems to me from the conversation on this thread lately that the main issue is them starving or freezing in one place with food inches away because they didn't break cluster enough to go to the food that was there. If you could even get them 12 hours where they could move the cluster to a better place or even make a few flights to grab some food from a feeder it seems like it would be better than them just balling up and not moving for a month while they starve.