Each year, 200 million birds are killed by Italian hunters. Anything from songbirds to majestic birds of prey is a potential target. The Italians are not just killing their own birds but vast numbers of migratory species heading for the rest of Europe. Joan Bakewell goes to Italy - the land of St Francis, the patron saint of ecology and animals - and talks to both the hunters and impassioned conservationists who say that if something isn't done soon, there won't be much birdsong left in Italy.