I have recently encounted a problem. I find that every night my day-olds and evens older chicks (up to 4 weeks and older) tend to huddle into one corner and climb on top of each other to keep warm I suppose. The next morning when I arrive I find that some of the chicks at the bottom are all dead. I have found up to 7 at one stage. Is this because the chicks on top are crushing those at the bottom. I have been told to round off all my corners in order to prevent this pile up. Does anyone have a remedy.