it is a very interesting topic for sure and as far as i know no one truly knows. I did some research when i was in college about what turkeys do during the night when really bad stuff hits.
at the time there was no data on the topic (this was in 96) so we did a 3 week study with little translated data to support a particular topic.
what i did find was in certain nights of very high wind and rain some would actually fly down and ride it out on the ground during the night. in a few other nights the birds would just climb down to lower limbs and ride it out in the tree. A turkey has a tendon in its foot that basically LOCKS them to the tree so they can sleep during the night and not fall out. Same thing applys during a very bad storm. this was all done in Auburn AL so hollows and terrain do not really help them. as far as i know not much other studies have been done on what turkeys really do during the night.
anyways thats what we found (the simple version at least)