I'm asking for a family member that came to me with this question. Her rooster is chasing one of the hens and not allowing her to eat or drink. I thought that maybe he was chasing to mate but the fact that hes not allowing her to eat or drink is weird. She's also checked her for mites, diseases or any irregularly things, nothing has been changed either. No of the other hens pick on her, in fact she was quite high in the pecking order. Does anyone know the cause? Or how she can prevent this? I told her to separate the hen so she doesn't die of malnutrition or dehydration.