So, we have 24 hens & 1 rooster that have been raised from chicks in a building that was not intended to be their permanent home. The oldest birds were hatched in early Feb. A few of the hens just started laying this past week. We have the coop ready but they do not want to stay in it & go back to the old building & try to get in it every night. Not wanting to leave them out over night, we grudgingly open the door for them. They free range during the day & have access to both the coop & building. Their food, water, roosting poles, & nesting boxes are all in the coop. They have nothing in the building other than shelves. How do we get them to make the move & embrace their new home? TIA!!