A few of you were so helpful to me with my chickens' injuries, I thought I'd follow up to let you know that I've taken your collective advice, and so far so good. All three hens seem to be recovering. The wounds are drying, icky-looking (like they weren't before) but they seem to be healing. I keep the rooster off of them, since he doesn't understand that they "aren't in the mood", and they are staying in the coop for now. Thanks everyone.