Number of species:     47 Greater White-fronted Goose     21 Gadwall     30 Mallard     8 Blue-winged Teal     8 Northern Shoveler     40 Northern Pintail     50 Green-winged Teal     20 Canvasback     4 Redhead     4 Ring-necked Duck     10 Lesser Scaup     2 Bufflehead     40 Ruddy Duck     20 Double-crested Cormorant     20 American White Pelican     4 Northern Harrier     2 Sharp-shinned Hawk     1 Red-tailed Hawk     1 […]