,anincreasinglyconcernednationtookfirmactiontostopthedestructionofmigratory(迁徙的)waterfowlandthewetlandssovitaltotheirsurvival.UnderthisAct,allwaterfowlhunters16yearsofageandovermustannuallypurchaseandcarryaFederalDuckStamp.TheveryfirstFederalDuckStampwasdesignedbyJ.N.“Ding”Darling,apoliticalcartoonistfromDesMoines,...