I have four redstart chicks that will be 4 weeks old this thursday. Their coop should be arriving on Tuesday and assembled by Wednesday. Should I still put their light on in the coop? I have also read that they should be locked in the coop for a week so that they become acquainted with their new enclosure. Is this a necessary step? For the run I intend on keeping it covered until they're big enough to be on their own. They're too small to be left uncovered!