Hi ya'll! One of my poor sebright roosters is sick. He's really really pale, and he was puffing himself up like he's cold. He eating and drinking like normal I think. But he acts really tired. Like I'll pick him up and he'll just close his eyes and kinda drop his head down. So last night I put heat on him and gave him water with onion powder and Apple Vinegar in it. ( I heard that helps with worms) Now its 72 outside so I put him out in a pen. Anything else I can do to help him get better or any idea what his problem is? I'd appreciate any help!