14 
Table VII - Wooded Delta Mackenzie River, N. W. T. (continued) 
Percent Species Composition, 1952 
Percent 
Species Percent Species 
Scoters 40.6 Mergansers 2.2 
Scaup 35.6 Old squaw 1.9 
Mallard 5.3 Canvasback 1,2 
Baldpate 4.7 Green-winged teal 1.0 
Pintail 3.9 Bufflehead trace 
Goldeneye 3.6 
Table VIII - Treeless Delta Mackenzie River, N. W. T. * 
1948 1949 1950 1951 1952 
Ducks per square mile 25.2 38.1 43.4 26.0 14, ! 
Est. breeding pop. index 40,320 60,960 69,440 41,600 22,560 
% change from previous year + 51 + 14 - 40 - 45 
Swans per square mile 1,4 0.9 0.8 3.2 1.4 
Est. breeding pop. index 2,240 1, 440 1, 280 5,120 2, 240 
% change from previous year - 36 - ll + 300 - 56 
Canada geese per square mile . 03 . 03 01 07 L.2 
Est. breeding pop. index 48 48 16 112 1,920 
% change from previous year - - - 67 + 600 +1, 700 
White-fronted geese per sq. mile . 06 . 04 02 0.3 0.5 
Est. breeding pop. index 96 64 32 480 800 
% change from previous year - 33 - 50 +1,400 + 66 
Percent Species Composition, 1952 
Species Percent Species Percent 
Pintail 61,4 Baldpate Bak 
Scoter 11.0 Old squaw 5.0 
Scaup 9.1 Merganser 0.4 
Mallard 7.8 Shoveler 0.2 
* Est. area 1,600 square miles. 
Table IX - Upland Tundra between Mackenzie and Anderson Rivers, N. W. T. * 
Percent Species Composition, 1952 
Species Percent Species Percent 
Scoters 51.3 Baldpate z.0 
Old squaw 24.1 Merganser 0.1 
Scaup 13.5 Mallard 0.1 
Pintail 8.9 
* Estimated area 5,300 square miles. 
