Investigations into an outbreak of duck virus enteritis among wild ducks in California in 1993 showed that as if fattening Peking ducks, humans fed anything and everything to the ducks, and the contamination of the water which finally resulted killed many of them.
一九九三年，加州一場野鴨疫病，探究原因，只因人們學那填北京鴨，什麼都往湖裡鴨子嘴邊丟，待水池感染，群鴨終於嗚呼哀哉。