This exact thing happened to my hen last year. There's some helpful info in that thread on my page. Since the flesh is salvageable, the beak itself will continue to grow out like a nail that got lifted from it's bed. In about a week or so the broken beak will fall off naturally and you'll see new growth up by the nostril soon after that. In the meantime, it's best to just leave it alone so as not to cause infection or pain. the biggest concern here is making it easy for her to eat, so I found that watering down feed, or even making fruit smoothies is a good idea . I would even warm it up so it doesn't shock the raw skin underneath. I used to take a qtip and dab a bit of antibiotic (WITHOUT pain relief,it's toxic to birds) like Neosporin without pain relief, and I'd crush up baby aspirin and mix that with some warm water, and just dab it on the flesh under the beak "hood". I only did this until I could see a scabby keratin layer form on the skin, then I let it do its thing.
