2017 Waterfowl Population Survey Total populations were estimated at 47.3 million 2017 Duck Species Breakdown Select Species Mallard Gadwall American wigeon Green-winged teal Blue-winged teal Northern shoveler Northern pintail Redhead Canvasback Scaup Scaup PreviousNext 2017 Scaup Numbers2017: 4.372 million. -12% change from last year2016: 4.992 millionScaup are -13% under the long term average. Scaup 1955-2017 Estimated Breeding Populations [chart not available] * in millions