My six chicks are 7 weeks old and have been in their coop and run for several weeks with no problems. In the mornings when I open the pop door they are anxious to get out into the run and usually they have stayed outside all day until dark when they put themselves to bed. After they are inside I close the door for the night. Over the last few days after they have been out for about an hour they go back into the coop and stay there for a while and then come out about an hour later and will go back and forth. I would prepfer that they be out in the run during the day. Is it OK if I close the pop door during the day so they can not get back in until night time??