All the snakes I've kept (not many, mind you) have tended to cuddle up in the same hide, even when I've put multiple hides in the enclosure. When I kept three that one summer, all three of them frequently shared the same hide.

Also, that one year that stampede of garters came through our yard, I could swear they were bunching up together and following a "leader", not like they all just happened to be going the same way, but like they were deliberately traveling together.