I've been integrating my chicks into the large coop with 5 adults. The new ones are 15 weeks and have been in with the adults for 3 weeks now, so they're getting to where they actually get closer to each other during the night. My issue is that 3 or 4 tend to sleep in the sand on the poop tray. At first it was because the adults would not let them all on the roost. I added another roost and the cockerels slept on the new one and pullets piled up at the end of the original roost, sometimes being edged off and stepping into the sand, then staying there all night. Now they just get right into the sand and stay. Should I try to stop this or should I wait and see if they quit on their own? Any ideas on how?