We did loose a few more chickens before I finally figured out the problem. Here I was combing the web for different chicken diseases, ones Iv never even heard of, rare diseases etc. Guess what it was? Coccidiosis. Simple huh? I feel like an idiot. A few of you guys mentioned that it might be cocci. Oh well, guess I will never mis-diagnosis that again. Hi everyone, sorry to be a new member and need help right away. We have a problem and we are afraid we will loose the whole flock. I will give a brief run down. We have adults birds who freerange. They used to roost in the area we moved out chicks into. They are perfectly healthy, weve had them about 2 years with no sick birds. The outdoor run is about 20 ft long x 6 feet long.. The indoor house is 6 ft 6ft. This is where we moved the chicks to when they were 3 weeks old. They were provided with a heat lamp. There were 26, 3 day old chicks, we bought them from Mc murray hatchery. Weve always received quality birds from them. They did great until we put them in the outdoor house at 3 weeks old. There were 15 meat birds and 10 hens. We noticed at 3 weeks or so the meat birds were missing feathers in various spots. Only the meat birds, not the pullets. We were told they needed special grower food w/ more protien. We started feeding them that and their feathers grew back and they look almost 100% normal now. About once a week we would find a chick or two dead when they were fine the day before. They looked normal. The meat birds that died seemed to have less feathers than the rest (approx. missing 30% of their feathers) I dont know if, when they died, the others picked out their feathers or they were like that when they died. I think they were like that as we didnt find any feathers lying around the dead birds. The pullets that died looked perfectly normal with no feather loss or signs of illness. Due to having less feathers on the dead meat birds, we noticed when we found them dead, their rear end, around the vent and about a golfball size area around it was GREEN. Strangest thing Iv ever seen. We couldnt tell if the vent areas were green on the pullets since they were fully feathered. All birds have been housed together, we use wood shaving for bedding. No vaccintions at the hatchry. We just gave them access to the outdoor run yesterday and they are able to go in and out at will. Does anyone have any idea what we are dealing with? Could it be the feed? It is not moldy or even damp, and our free range birds have had a few handfulls of it and they are fine. Weve used the same feed store for years with no problems. This is driving me to distraction wondering what it could be.