Table II. - Species Composition, Species Densities, and 1953-1954 Trends in the South Dakota Waterfowl 
Breeding Population. 
Number of 
Males Percent Composition Species Densities* 
Species 1953..~—«21954 1953.  #+1954 °° ®#&£4xChange 1953. +~S—s«1954 +~©)d6Ghange 
Blue-winged teal 4093 3165 48.71 41. 84 ~ 6.87 6,64 4.55 - 17% 
Pintail 1279 1049 15,23 13. 86 - 1,37 2.07 1.50 - 28% 
Mallard _ 1084 1000 12.90 13.22 + 0.32 1,76 1.43 - 19% 
Shoveler 798 781 9.50 10,32 + 0.82 1,30 1,12 - 14% 
Gadwall 258 353 3.07 4.66 + 1,59 0.42 0.51 + 21% 
Redhead 254 244 3.02 3.22 + 0.20 0.41 0.35 - 15% 
Ruddy 116 98 1,38 1,29 - 0.09 0.19 0.14 - 26% 
Scaup 447 815 5.32 10.77 + 5,45 0.73 1.17 + 60% 
Canvasback 33 23 0.39 0.30 - 0.09 0,05 0.03 - 40% 
Baldpate 40 33 0,48 0.43 - 0.05 0.06 0.05 - 17% 
Green-winged teal 7 3 0.08 0.04 - 0,04 0,01 T - 
Wood duck 8 0 0.10 0 - 0.10 0.01 - - 
Black duck 1 0 0.01 0 - 0.01 T - = 
Bufflehead ] 0 0.01. 0 - 0,01 T - - 
Total 8419 7564 100.00 100, 00 13.65 10,85 
* Product of percent species composition and minimum state-wide duck density. 
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