I don't know if this is a problem or not? My Buff Orpington hen has the lower third of her upper beak minus a few layers of outer 'horn'. I looked at all her buddies and theirs are all fine. Will this grow back? Can it be a problem? Why has this happened? Do you think she has just been too busy scratching the ground with her beak and has worn it down? I threw extra hay in there today as there were some bare patches where they have been scratching and making dust holes. What do you think folks, am I being paranoid or is this something that should be addressed.... ?