Starlings migrating from northern Europe fly in the sky of Rome with the Trajan's Column in the background on December 17, 2014. 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 / GABRIEL BOUYS (Photo credit should read GABRIEL BOUYS/AFP/Getty Images)
