They do have a coop, of course for protection. Since chickens are basically zombies at night, I'm not worried about Roo bullies really. Haha. Though I don't get out there until 7:30a most mornings. So far, so good!

Coops do not need to be heated. As long as they're well made, no drafts, and they do not get moist inside at all. The chickens do well even in -40! Can you believe it?! Especially if they've got lots of chicken friends to cuddle up to. I don't think, however, only 2 or 3 chickens would do well in that temp. But I can't say for sure!