I was in the pen an hour ago and I heard the chickens sounding distressed and the pullets came barreling out. I look in the coop and Blondie is almost on his head flipping around and his neck was very distorted. My other rooster Red jumped off the roosting bar and was nudging him with his head, so I go in and pick him up he seemed to be conscience and aware of his surroundings. He was trying to pick his head up but it would just flop over so I held it with my hand, he seemed to regain control of it. I put him down to see if he could stand and he was very unstable, trying to use his wings to stable himself, so picked him back up. I got him in the house and placed him in my nest basket, I use when I bring one of them in to spend time with. I gave him a little yogurt, which he ate happily, after about two minutes he stood up and acted like everything is fine, other than his blackness on his comb. Now the blackness wasn't there before the incident, and I do know from observation of my roos is that when they get stressed, their combs will blacken and then go back bright red after they calm down, and the blacking is already going away. Right before it happened he was just standing there, I know all their food is fresh, I actually was in the process of filling the feeders when it happened. Their water was changed right before this, so it too is fresh. No build up of feces, I cleaned coop and pen yesterday. I've never seen this happen before and he is our little solider roo, he has been through so much and just lost his girlfriend a week ago today. I know they say they forget flock mates quickly once gone but he mourned her for days and hasn't been himself since, now this happens. She was taken by a bobcat so it's not related by any form of disease. Anyone have any ideas?