Northern Prairie Wildlife Research Center
| Table 36. A comparison of species composition of all duck broods and estimated pairs, Woodworth Study Area, 1965-81. |
| Percent species composition averaged for 17 years | ||
| Species | Estimated pairs | All broods and indicated broods |
| Dabbling ducks | ||
| Mallard | 11 | 9 |
| Gadwall | 14 | 14 |
| Northern pintail | 6 | 5 |
| Green-winged teal | 2 | 2 |
| Blue-winged teal | 46 | 50a |
| Northern shoveler | 6 | 5 |
| American wigeon | 2 | 2 |
| Total dabbling ducks | 86 | 86 |
| Diving ducks | ||
| Redhead | 4 | 3 |
| Canvasback | 1 | 2a |
| Lesser scaup | 5 | 3 |
| Ring-necked duck | <0.5 | <0.5 |
| Ruddy duck | 4 | 5a |
| Total diving ducks | 14 | 14 |
| aBrood estimates higher than their respective pair estimates may be the result of counting ability or brood immigration onto the area. |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/wpwood/table36.htm
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