10 
Table IV. 
Ducks per square mile 
Est. breeding pop. index 
805, 933 
- Precambrian Forest and Forest Tundra * 
1950 
14:7 
1951 
10.0 
1952 
11.3 
1955 
6.9 
1,021,312 694,770 785,090 479,391 


Percent change from former years + 27 - 32 + 13 - 40 
Percent Species Composition, 1953 
Species Percent Species Percent 
Scaup 41.6 Baldpate 1;0 
Scoter 36.0 Pintail 0.5 
Old squaw 9.0 Bufflehead 5.5 
Merganser 8.0 Goldeneye 0.5 
Mallard fy t Green-winged teal es 
*Estimated area 69,477 square miles, 
Table V. - Closed Forest - 60° - 63° 30'N., N. W. T. * 
1949 1950 1951 1952 1953 
Ducks per square mile 5.7 9, 3 Ts 11.8 3.6 
Est. duck breeding pop. index 236,350 385,624 294,402 489,287 149,274 
Percent change from previous year + 63 - 24 + 66 - 70 
Canada geese per square mile . 26 1.2 0.7 0.93 28 
Est. goose breeding pop. index 10,780 49,758 29,025 38,562 11,610 
Percent change from previous year + 362 - 42 + 33 - 70 
Percent Species Composition, 1953 
Species Percent Species Percent 
Scaup 35 Bufflehead 4 
Mallard 18 Shoveler if 
Pintail 14 Green-winged teal 1 
Scoter 14 Goldeneye 1 
Old squaw 7 Merganser 1 
Baldpate 4 
* Estimated area 41,465 square miles, 
