I have six Barred Rock chick that are about 4 weeks old. They are almost feathered out . . . just missing a few feathers on the tops of their heads. They've been doing fine in a VERY large cardboard box in the garage. We needed to move them to the coop a bit earlier than I would have liked. The coop is sitting in the garage and it seems to be warm enough for them. Since were are only keeping 3 of the birds, I am only using one nesting box. The other two were removed so the coop has a bit more space for the chickens to move around in. Here's the problem. They've been living with pine shavings up to this point. I put sand on the floor of the coop. Where I removed the nesting boxes, I put down pine shavings. The birds are avoiding the sandy part of the coop. Prior to the move to the coop, they were all roosting at night. I left them this evening all huddle together on the tiny section with the pine shavings. Is it going to take them a while to adjust to the new surrounding? I did a lot of research before deciding on the sandy coop floor. I'm surprised that they are avoiding it. Advice?