Our first year raising our own meat birds. They are the ones that get big and are all white. We bought them at the Coop store the 27th of May. Out of 35, we only have 18 left. What is bothering me is how the ones left, look. It is horrible. Hardly no feathers and their skin is very dark, almost purple. Some have terrible and painful looking splits on their skins. We have been feeding them as per the instructions of the Coop. 4 weeks on starter and we started the 2nd stage feed about 10 days ago. Today we moved them all into the garage in a huge cage which was outside. They were out on the grass in the cage and had sand and straw. Because of the hot days we did not board up the sides and they got the warm breezes and fresh air. The top however was closed because we did not want them getting the direct sun. Now they are in the garage in the same cage. We have kept their cage clean, fresh drinking water each day in a 5 gallon feeder and have kept their feeder always full so they never run out of feed. I am sure some will want to leave nasty comments but please don't. I am asking for help. This is our first try and we have done everything specified by the Coop store. What is wrong with these chickens?