Northern Prairie Wildlife Research Center
| Table 9. Breeding pairs/haa of undrained wetland by wetland class (Stewart and Kantrud 1971) in the waubay study area, Day County, South Dakota, 1993. | |||||||||
| Species | Wetland Class | ||||||||
| I | II | III | IV | III t | T-2 | T-3 | T-4 | ||
| Dabbling ducks | |||||||||
| Mallard | 0.00 | 1.65 | 1.11 | 0.78 | 2.68 | 9.58 | 1.49 | 5.68 | |
| Gadwall | 0.00 | 1.10 | 0.63 | 0.37 | 2.35 | 3.07 | 4.48 | 5.68 | |
| Northern pintail | 0.00 | 1.10 | 0.23 | 0.10 | 1.17 | 3.07 | 1.49 | 1.14 | |
| Blue-wing teal | 0.34 | 7.16 | 3.19 | 1.50 | 2.85 | 3.07 | 0.00 | 2.27 | |
| Northern shoveler | 0.00 | 0.83 | 0.39 | 0.13 | 0.84 | 0.77 | 0.00 | 2.27 | |
| Total dabblers | 0.34 | 11.84 | 5.55 | 2.88 | 9.89 | 19.56 | 7.46 | 17.04 | |
| Diving ducks | |||||||||
| Redhead | 0.00 | 0.00 | 0.23 | 0.78 | 0.67 | 0.38 | 0.00 | 9.09 | |
| Canvasback | 0.00 | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Ruddy duck | 0.00 | 0.00 | 0.00 | 0.29 | 0.50 | 0.00 | 0.00 | 0.00 | |
| Total divers | 0.00 | 0.00 | 0.23 | 1.13 | 1.17 | 0.38 | 0.00 | 9.09 | |
| Total | 0.34 | 11.84 | 5.78 | 4.01 | 11.06 | 19.94 | 7.46 | 26.13 | |
| a Not calculated for lesser scaup, ring-necked duck, and wood duck because of low pair numbers. | |||||||||