59 
Table Il. - Classification and Size of Water Areas on the Success Study Area. 
ea a er ee ee a 


Water Area Class- Number Percent of Average Size Percent of 
ification of Areas Total in Acres Total Acreage 
Class B. at * 8.0 8.2 48.6 
Class C. 105 30.9 lea F 39.8 
Class D. 208 61.1 0.3 11.6 
Total 340 100.0 1.3 100.0 
Tale III. - Breeding Pair Census, Success Study Area, 1955 *. 
; : May May May June Corrected Percent Pairs/ 
Species 6-7 J1l-12 24-25 4-6 Brd. Prs. Sp. Comp. Sq. Mi. 
Pintail 304 265 222 143 265 30.8 23.7 
Mallard 214 “234 179 139 234 27 2 20..9 
B-w. Teal 66 103 144 142 144 16.7 12.7 
Shoveler 57 65 “OL 72 91 10.6 8.1 
Baldpate 37 36 40 40 40 4.6 3.6 
Gadwall 17 32 38 37 37 4.3 3.3 
Lesser Scaup 37 19 22 23° 23 2.7 2,1 
Canvasback 16 11 14 m3 11 1.2 1.0 
Redhead 9 10 21 7 10 ad 0.9 
G-w. Teal 10 “6 4 2 4 0.5 0.4 
Ruddy duck 2 -* 2 - 2 0.3 0.2 
Total 769 781 777 612 861 100.0 76.9 
* Breeding pairs equals lone drakes plus pairs. Underscored figures 
are those selected for corrected breeding pairs. 
Table VII. - Duckling Mortality for Pintail, Mallard, Blue-winged Teal, and 
Shoveler on the Success Study Area, 1955. 
Avg. Hatch/ Avg. Class Avg. Class % Mort. Hatch % Mort. Class 
Successful la Brood IIc & III to Class IIc la to Ile & III 
Species Nest size Brd. Size & Il] Brd. Size Brd. Size 
Pintail 8.32 6.69 5.05 39.3 24.5 
Mallard 8.63 7.55 6.50 24.4 13.9 
B-w. Teal - - 10.25 7.69 ~ 24.9 
Shoveler em , 9.33 7.56 - 18.9 

