Moved to the Birds of Prey Northwest, a charity in Idaho, she was nursed back to health but experts said she should be put down, her injuries being too severe.

But according to a documentary made in 2008 - and just released on Vimeo - specialist Jane Fink Cantwell refused to give up, and was contacted in the nick of time by Nate Calvin, a mechanical engineer who designed a new beak with the aid of a computer.

The prosthetic beak was eventually fitted using a complex titanium mount, which still requires constant adjustment and refitting.

Beauty is not able to return to the wild because the beak is not secure enough - but she can feed herself and preen her feathers.