Do older Eagles beat their old worn down beaks off on a
rock and then grow a brand new one? I have heard that they do but I want
to know for sure.
No. I have no idea where this notion started, I've been asked several times.
It is not possible for an eagle to completely lose its beak and grow a new
one, by accident or on purpose.
Eagles cannot regrow a new beak. If I'm not mistaken, most birds of prey do
not have beaks that continue to grow to much once they reach adulthood. If a
beak is broken, it will stay broken. They might rub their beaks on tree
branches or rocks to clean or sharpen them. Parrotts have beaks that
continue to grow, thus they must wear their beaks down otherwise they will
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Update: June 2012