BISMARCK, NORTH DAKOTA — Delta Waterfowl forecasts that poor breeding conditions in the prairie pothole region will result in a smaller fall flight than waterfowl hunters have experienced for many seasons. The Duck Hunters Organization expects that while blue-winged teal, green-winged teal and gadwalls had average to below-average production, other key species fared worse, including mallards and, even more so, pintails, wigeon and canvasbacks.