For the past four days or so my cockerel hasn't been feeling that well. His comb is more purplish then red, his poop has been white and running, he holds his tail low, and he's been lethargic. I'm going to start keeping him seperatd from the hens at night because I don't know what's up with him. He eats and drinks still, but does it slow. He's about 10 months old and I've had him for about 2 months. I bought him at the fair from someone for $10 and I know he was healthy then because he was inspected before being showed. Can someone please help me diagnose what's wrong with him?