My Frizzle Cochin Bantam hen isn't doing well all of the sudden. This morning when I went out to the coop she was incessantly sneezing, constantly each her face with her foot, she is opening her mouth really wide a gasping for breath, and I scrutinized her face and it appeared to have a greenish tint in it. I am not very experienced with my chickens getting sick, however I did have a hen that was breathing out of her beak when I held her. Is my chicken sick? Or am I just overreacting?