I let my 19 week old hens out of the coop and into the run about 7am every day. Sometime around 10:30am they all go back into the coop for a few hours. The first time this happened I thought it was because a predator came around and spooked them back into the coop, but I see them do it almost every day now. They didn't do it until they were about 17 weeks old. Today, they have been in there for almost 2 hours. I checked on them to see what they were doing....just hanging out....on the floor...one on the roost. I checked for eggs...none. What's up with this? Does anyone else have their hens go back in the coop for a few hours like mine?