Starlings migrating from northern Europe fly in the sky above Rome at sunset on December 19, 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 / TIZIANA FABI (Photo credit should read TIZIANA FABI/AFP/Getty Images)
