Starlings migrating from northern Europe fly near St Peter's basilica in Rome on December 12, 2015. About one-million starlings migrate in Rome during autumn and winter time and draw beautiful patterns in the sky before spending the nights in the trees by the Tiber river, creating chaos in the neighborhood with their droppings. AFP PHOTO / TIZIANA FABI / AFP / TIZIANA FABI (Photo credit should read TIZIANA FABI/AFP/Getty Images)
