Table VI. - Precambrian Edge, N. W. T. * 
i nn SS 
1950 1951 1952 1953 
Ducks pzr square mile 29.4 27.5 26.1 27.6 
Est. breeding pop. index 211,092 197,450 187, 398 198, 168 
Percent change from previous - 6.5 - 5 + 6 
years 
Percent Species Composition, 1953 
Species Percent Species Percent 
Scaup 68 Pintail 2 
Scoter 16 Green-winged teal 2 
Mallard 5 Bufflehead 2 
Baldpate 4 Shoveler 1 
*Estimated area 7,180 square miles, 
Table VII. - Wooded Delta MacKenzie River, N. W. T. * 

1948 1949 1950 1951 1952 1953 
Ducks per square mile 27.7 31.8 21.2 26.7 a2, 7 26.8 
Est. breeding pop. index 99,720 114,480 76,320 96,120 117,720 96,480 
% change from previous year + 15 - 33 + 26 + 22 - 18 
Swans per square mile 1,5 04 Loi oan 19 .08 
Est. breeding pop. index 5, 400 144 6,120 828 684 288 
% change from previous year - 97 + 325 - 86 - 17.4 - 60 
Percent Species Composition, 1953 
Species Percent Species Percent 
Scaup 40 Green-winged teal 2 
Scoter 24 Canvasback 1 
Baldpate 11 Goldeneye . 1 
Mallard 10 Merganser 1 
Pintail 10 
* @stimated area 3,600 square miles. 
