State and federal wildlife managers have increased the number of ducks hunters can kill this fall. In Minnesota this year's bag limit will be the highest its been since the end of World War Two . The Department of Natural Resources says the higher limits are justifiable. Officials say wet weather over the past several years has helped the duck population to boom. But some environmentalists think the new bag limits are too liberal and they're worried other new waterfowl regulations could threaten the thriving duck populations. Minnesota Public Radio's Mark Zdechlik reports.