A crested caracara, named Jester, was on "routine flight training" when, apparently disturbed by some crows, she set off on a south London tour.
She finally arrived in Sydenham's Mayow Park, and when I visited was maintaining an imperious stance high in a tree, resisting any enticements from her keeper.
I understand her keeper has now persuaded her that there is no place like home and has taken her back to London Zoo. For better pictures see the BBC page