Starlings migrating from northern Europe fly in the sky of Rome with the Colosseum in the background on December 17, 2014 at sunset. 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 (Photo credit should read TIZIANA FABI/AFP/Getty Images)
