On Vergenoegd Wine Estate in Stellenbosch, South Africa, about a thousand Indian runner ducks parade twice a day into a vineyard to rid it of pests. It's a remarkably orderly scene. Unlike your ...
STELLENBOSCH, South Africa — The quacking is soft at first amid the vineyards that roll for miles in this South African wine-making town. But then the duck handlers whistle and wave their white flags, ...