Breeding Population Indices by Stratum = 1957 
CeSask, C-Sask, 




Species C-Ont. C~-~Mans, D-Man. - Sovth > North: Total 
Mallard 37,386 63,370 32,252 45,659 81,461 260,128 
Gadwall = 3,467 = oe . “= 3,467. 
Baldpate - 4,430 956 1,114 = 6,500 
Pintail - 1,156 6,259 4,773 - 12,188. 
Green-winged | cara 
Teal = . ~ 6, 364 = 6, 364 
Blue-winged | 
Teal = - 695 477 7 1,172 
Shoveler ° = 1,130 o = 1,130 
Merganser 76,889 14,639 435 15,114 25,829 132,906 
Redtead ~ = 5,738 477 - 6,215 
Ringneck = = 1,156 - = oa 2,156 
Canvasback “ - . 2,086 - - 2,086 
Scaup 60,135 97,463 35,730 75,568 176,831 445,727 
Goldeneye ° 2,311 i 6,364 7 8,675 
Ruddy Dick a Ee + = ot - = 
Bufflehnead - 1,156 695 3,182 - 5,033 
Scote> 1,940 3,464 956 = 47,022 53, 382 



Total Ducks 176,350 192,612 86,932 159,092 331,143 946,129 


Canada Geese = 3,992 = =o 7 1,028 - 5,020 
Se Se CS SR eS ee a 




Total Duck Index - Entire Survey Area - 1955 -~ 1957 

ER Sis Fn ing eg ph rl en) pen peer 
SS ——a en SS a a oS aE SEE 
st 
Percent Change 


Species Index - Year From From 
Species 1955 1956 41957 Average- 1956: Average 
Mallard 245,569 246,296 260,128 250,664 + 5.6 + 3.8 
Black Duck 6,905 446 = “ = = 
Gadwall 1,165 = 3,467 1,544 =. 4124.5 
Baldpate 29,983 7,877 6,500 14,786 - 17.5 - 56.0 
Pintail - 46,36] 17,295 12,188 25,281 -~ 29.5 - 51.8 
G. W. Teal 13,486 6,121 6,364 8,657 + 4.0 = 26.5 
B. W. Teal 4,208 3,273 1,172 2,884 - 64.2 = 59.3 
Continued -- 
74 
