Please give me any advice on what to do. I have 3 Cornish Rock X's. They are roughly months old. Just found out last week, thanks to this site, that they are "meaties" that I unknowingly bought. I realize they are old and anyone else would have processed them by now. They are HUGE, and I let them free range in my grassy yard most of the day. This morning I fed them and noticed one had a dark area under her left wing that I had not noticed before. On closer inspection, she has lost a lot of her feathers there though I don't see any open wound. I flipped her over, and ALL HER FEATHERS ON HER TUMMY AREA ARE GONE!!!! I dont know what to do. She is eating well, and when the chickens walk, they do drag themselves as they are so large. I checked the other 2 and they have some feathers on the tummy but not as much as they used to..... In case you cant tell, these are my first chickens. Any advice or thoughts appreciated.