Avian Flu has hit many Asian countries this year, but Hong Kong, where the disease first spread to humans, has not been affected. Still, there are increasing calls to end the sale of live chickens which are chosen and killed at markets and shops across the city. Should Hong Kong stop the sale of freshly slaughtered chicken? Scientists agree this simple public health measure would reduce the risk of a worldwide pandemic which has killed tens of millions. But what if that measure goes against habit, culture and tradition; and what if no one can calculate the risk? How much is a bird in the hand really worth?