A friend of mine has a sister that is new to chicken raising. She's having trouble with one of her hens, a silkie, I think. The hen dips her head in water causing her feathers to cover her eyes like bangs. The water then freezes the feathers into that shape so she can't see very well. The other hens pick on her because of it. Is this behavior normal, and is there anything my friend's sister can do to stop it?