I have had four chickens die in the past two months.. It just came out of no where. Three of them were younger birds. (around a year old) I don't know what to do or what steps to take. They had mites a few months ago and I have treated them for that. I am going to worm them starting tomorrow. I have noticed that a few days before I lose a chicken there is a liquid bright brown poop in the run. I don't know if that is a sign of something or not. They tend to lose a lot of weight a few days before death and slow down. The day of they will become quite lethargic and distance themselves from the other birds. I have no idea what direction to take or what to do in the case. I am afraid that something is going around and I will lose another one. Could this be a case of worms? Any insight will be appreciated.