I have an injured Rooster. He is stunted, by a lot, he's a purebred Orpington and is 7 months old, but not much bigger than a Bantam. He's also never had a lot of weight, with pretty much no muscles mass besides what he needs to run and flap his wings, and no fat whatsoever. He eats and drinks fine. He's my baby. My horse kicked him a week or two ago, and he is walking a little bit finally (sprained his leg), but I still have him inside in a warm room with food and water, my others will pick on him. He's getting sick. He had a cold, we treated it, but he has been sleepy all day, barely moving much. He also didn't talk to me when I washed off his bottom and his cage out this morning. He normally makes noises to me, I clean it every day. Also when I call his name he normally looks up, now he doesn't even bat an eye. Another thing I noticed, is that his poop is starting to smell increasingly worse. As I said I clean the cage out every day, cleaned it this morning and my room smelt horrible by 12 (cleaned at 9). He does have diarrhea. I'm worried about him. I can't stand seeing him sick. He's had a rough life. Does anyone have any ideas?