2018 Duck Population Numbers | 2018-2019 Waterfowl Season Species-by-species breakdown, the USFWS Waterfowl Population Survey will help you prepare for the 2018-2019 duck hunting season © 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 Green-winged teal PreviousNext 2018 Green-winged teal Numbers2018: 3.043 million. -16% change from 20172017: 3.605 millionGreen-winged teal are +42% over the long term average. Green-winged teal 1955-2018 Estimated Breeding Populations [chart not available] * in millions