It might sound quackers, but ducks from the city make a different noise to their country cousins.
London ducks have a rougher quack which resembles a shout, while ducks from Cornwall make a softer sound, a university study has found.
"The Cornish ducks made longer and more relaxed sounds. The cockney quack is like a shout and a laugh," said one of the research team.
It means that ducks' "accents" mimic those of the people in these regions.