Birdydeb
Songster
Mine did this for over a week and a half. After the first 4 or 5 days I would put them on a roost and they would run back to their corner. I finally put a short roost on two cinder blocks in that corner and they piled up on it! LOL Now after 2 weeks some are roosting on the high roosts and a couple still on the corner short roost. It really bugged me at first because the corner they were piling into was the location of the old pop door and I felt it was the weakest spot in the coop. We reinforced that and I just left them alone. As everyone told me at the time....they just do what they want to do. It does look ridiculous and incredibly hot but I think if it was too uncomfortable they wouldn't do it. They still squabble and fuss every night as they go to roost. I just figure they are still working out the dynamics of their flock and deciding who they want to sleep next to. Silly chickens. 
