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. |