I have 5 one year old plymouth rock hens. For the last few days I've noticed they spend all day in the coup! It has been particularly nice weather, so I'm baffled. When I go into the run so see what their deal is they come out to greet me (wondering why I didn't bring a treat, I'm sure!). I see them come out a few times to get a drink or eat a bit, but mostly all 5 of them are in the coup all day. It's not a huge coup or anything, but it's big enough for a nesting box and for all 5 of the to roost. I really don't see why it would be so appealing to them lol. They are definitely going through a molt though. Could that have anything to do with it? I looked all in the run and the coup to see if there was anything that could cause this behavior, but I didn't see anything.