My chicks are about 2 months old and I just built a new addition to their old coop. Since then they have refused to put themselves to bed at night and want to roost on my back porch. I have to carry them to the coop and put them inside. It has been about a week. I feed them and water them by the coop and I have purches, just like their old coop. Is there anything I can do to change their behavior and encourage them to want to sleep in their coop and go to bed on their own?