I think they tend to bed in a position where they can smell what they can't see, and also in spots where if anything or anybody came close they would hear the approach. And I know they bed for different reasons, in thick cover or shelter when the weather is real bad, and one more open knobs and hillsides when weather is better. Minnesota being "home" a lot of the beds I found were on South slopes of hills. Maybe to soak up sun and be out of the North wind?