Duck hunting season opens in the northern one-third of Missouri this weekend – the southern two-thirds of the state opens up in the coming weeks. Waterfowl biologist Andy Raedeke with the State Conservation Department says there has been a dip in duck numbers in the past few years. But Raedeke believes there will be enough ducks for successful hunting this year. He says Missouri has been helped by some late-season rains that have put some water into marshes and ponds that will attract in the birds during their migratory flights.