2018 Waterfowl Population Survey Total populations were estimated at 41 million © Melinda Garner 2018 Duck Species Breakdown Select Species Mallard Gadwall American wigeon Green-winged teal Blue-winged teal Northern shoveler Northern pintail Redhead Canvasback Scaup Canvasback PreviousNext 2018 Canvasback Numbers2018: 0.686 million. -6% change from last year2017: 0.733 millionCanvasback are +16% over the long term average. Canvasback 1955-2018 Estimated Breeding Populations [chart not available] * in millions