My buff orpington pullet has a light pinkish droopy comb and has no other symptoms. She has no pasty butt, her eggs are clean and nice and even acts like a normal chicken should. Is there anything I need to worry about? I have not given her anything but her food, water and oyster shells. She does get treats like dried worms, scratch and an occasional table scrap. The other 2 girls get all of the same thing and their combs are straight and red. Oh, and there is loose stool, but I don't know who is doing that.