[Well, it's an honest question, and he doesn't expect Chase to use the information to bad ends.]

Hmm. Moderately so, I'd say. It takes building up quite a bit of muscle to not fly like an awkward fledgling, but while our bones are strong, it's a real pain to get one broken. If your healer isn't skilled, or if you jostle the bone too much, it might grow back wrong and ruin your wing forever.