My rooster has had a series of unfortunate events. A few weeks ago he staggered out of the coop, had a yellowish diarrhea and no appetite. I gave him some nutridrench and flushed him out with molasses water. I thought he may have eaten something bad. He also lost his ability to crow. He had started getting better, eating and gaining some weight, but now he is having raspy breathing and has his mouth open. Today he made some weird noises and fell over. Any thoughts? Also I have not noticed any nasal discharge.