I have a very sweet salmon favorelles hen and yesterday I noticed one of her eyes was shut. I picked her up to examine it and the other eyed looked perfectly fine and the one eye just looked like it was shut. Today I go into the coop and her other eye is partially closed. We just had 7 hens removed from flock (6 went to a new home 1 attacked by dog ) so there is defiantly tension and "violence" running through my flock. I've seen others pick on her before a lot. Should I be worried there is another underlying cause and how should I treat this. She other wise is acting and looking healthy.