While I don't really trust snopes about politics(they say that the muslim clock boy who went to the white house is a legit inventor), I do trust them not to screw up email hoaxes and old wives' tails.
http://www.snopes.com/critters/wild/eaglerebirth.asp
False, the eagle does not smash its own beak to extend it's lifespan
http://www.snopes.com/critters/wild/eaglerebirth.asp
False, the eagle does not smash its own beak to extend it's lifespan