Newbie here. My chickens are 15 weeks old and have taken to roosting in the coop the last couple days. We just finished off a couple weeks of rain - during which they spent more and more time in the coop but down on the floor. Yesterday and today, we've actually had sun and the run is drying out. Yet, they've hardly come out of the coop. Even less than when it was raining. I would have thought, at a minimum, they would sun themselves in the sun that comes through the coop window as they've done on previous days. Instead, they're up on the roost in the middle of the morning! Any thoughts? Should I be worried? Thanks in advance.