We have four chickens in a small coop that we kept confined for a few weeks and have been letting them free range for close to a week. I normally just let them out to free range when I'm able to keep an eye on them because we have a chicken killer dog. Yesterday we were home all day, so I figured it would be nice for them to free range all day while we kept an eye on them. They were out from 6:00am until close to 9:00pm. Today I opened the door at 10am and they have not come out of the coop yet. It's 2:00, so this is very strange to me... why would they want to sit in the hot coop when they could be free ranging in the woods? Should I kick them out? Should I be worried?