Curious as to why these waterfowl should leave their river bed home and invade farm fields, Hsu Pao-hsiung and his colleagues launched an enquiry to find the reasons and so pinpoint solutions to the problem.
令人好奇的是，為何雁鴨不再安於河床而侵犯農田？為了找出原因以對症下藥，徐保雄帶著同仁對雁鴨進行追蹤。