This morning when I got up and checked on everybody in the brooder, I noticed a bloody spot on their bunny (yes, there's a stuffed bunny in the brooder). I watched the chicks for a while & found the offending bloody-pooper. His poo is straight bloody red. I have no idea what could have happened to him. They are almost 5 weeks old (will be 5 weeks tomorrow), and the 2 cockerels have started kinda chest-buttin' a lot. This is the most dominant of the 2 cockerels. I have separated him out from the rest of the brooder in a tub by himself with food & water and a roosting stick. Any thoughts/ideas, anyone?