He was fine last night. They have fresh water, I did switch to pellet instead of crumbles 2 days ago, fancy scratch grains,cracked corn, and oats for treats. They are not free ranging due to dog issues but have plenty of space. He is a little less than a year old according to the lady who gave him to me. No gasping, no sneazing, it does look like his poop as become a little runny though, he is drinking but not eating. I even dug him up worms and he is not eating. Unsteady on his feet and his comb is half purple already. He does have a small red mark at the back of his head. Please tell me what to do next. I have him separated so the other can not hurt him, We are offering water and have him sitting in the shade. My husband is guarding him now. Help Note: he died as I described below. When I picked him up a flow of yellow water came out. Not alot but maybe a teaspoon full. Very yellow. Is that what was wrong with him? What caused it? How do I protect my girls. I just picked up the apple cider vinegar yesterday and started it this afternoon ( a day late and a dollar short I know). No one is sneezing or act odd. Well the broody hen is odd but not odder than usual. Any opinions or advice would be lovely.