For the most part, they wisely roost on the relatively warm wooden log that is in their “coop” for that very purpose.
But a few of them think the stone foundation is more cozy. What’s funny is that you don’t notice them at first (it’s much more dim in the barn at night than it appears in the picture below). But then you notice one, then another, and another, and another.
So fun to see their preferences emerge.
Where do your chickens like to roost?