Lately I've noticed my Cochins, now 7 wks old, are sleeping outside their house. They bunch together and sleep on an old picnic bench. I can't figure out why. I've checked the house for rats and snakes and find nothing. They will go in and out during the day but won't sleep in there. I tried turning the light back on since they seem to be sleeping where they are in view of our big security light. But that didn't encourage them to go back in. Anyone have any ideas? We are having warm night temps here, but I've never had chickens sleep out under the stars like this. Any imput would be helpful.