My chickens are 4 months old they very light in weight not growing good also loosing feathers there poop is a dark pink reddish in colour. Then they get weak and die. I have treated my chickens 2 months ago for 10 days it was cocidiosis. My birds where treated with amprolium. All proper cleaning was done; Birds had a nice dry barn. Why all of a sudden birds show symptoms of it again. I lost over half of my chicken, the adult birds stop laying but no symptoms. I am so sad so much lost and so many good birds. My work and money is gone. What to do I don’t know any more. ?? What can I treat them with?? It seem like the treatments never work. I lost some during the treaments and still loosing them after the treatments..???