I currently have 6 RIR that are about 20 weeks old. Today when feeding them I noticed that 1 had some blood in her poop. She was very lethargic and didn't give me any problems while picking her up. She has since been isolated on the other side of the yard, with her own food and water. She is eating and drinking well. I did take some pictures to hopefullly help out. Taken after placed in isolation. Taken from inside the run area. Thanks everyone for your help.