This is my first time raising chickens so there is a lot that I don't know, but I've read books and talked to some folks and haven't killed them all yet so I might not be doing everything wrong. I got 50 cornish rocks, supposed to be all boys hatched April 26th. They were in the basement on woodshavings (changed daily) for the first 4 weeks. Moved them outside Memorial Day weekend to a portable pen inside an electric poultry fence. I've moved the fencing twice since the original location and the pen gets moved every day. I've been feeding an organic (non-medicated) chick mix usually three times daily. About 10 days ago, one started turning purple (just the skin, not the feathers). Then another started turning. The first died after two days of being purple. The second lasted 8 days and died yesterday. Late yesterday, I found two more that are starting to look more purple than red. Poultry has never been raised on my property and all the equipment is new. Anyone have a guess what is wrong or what I should do? Thanks!