I have 5 chicks that are about 6-7 weeks old, 4 hens and 1 roo, and they have a 2 story coop with grass on the bottom and wood shavings on the top with their roosts. They have food and water downstairs, and just water upstairs. The first night, I put them in upstairs and they all stayed there and went down in the morning. Then, the next night only the roo went up. Now, the past few nights they were all sleeping on the bottom section on the grass, so I have been putting them upstairs myself. Should I just leave them alone and let them figure it out themselves?