by 
Pre-Carnbrian - Hudsonian Zone (N. W. T.) 
Ducks per square mile: 1949 - 11.6 
1950 - 14,7 
(Increase over 1949 of 20. 3%) 
Percent Composition 1950 
Scaup 45.6 Old-squaw 4.7 
Scoters 29.6 Mallard 2.2 
Unidentified ducks 8.2 Golden-eye 2.2 
Baldpate 7.4 Mergansers 1.4 
(Remainder consisting of green-winged teal and bufflehead) 
Ducks per square mile: 1949 - 5.7 
1950 - 9.3 
Canada geese per square mile: 1949 - 0.26 
1950 - 1.2 
(Increase over 1949 of 38.6% in ducks). 
Percent Composition 1950 
Scaup 48.8 Green-winged teal 3.0 
Mallard 20.6 Shoveler 2.6 
Baldpate eaig Unidentified ducks 18 
Scoter 6.0 Canvasback ee 
Pintail 5.8 Bufflehead &.9 
(Remainder consisting of old-squaws, blue-winged teal, golden-eye, mergansers, 
and redhead). 
Wooded Delta (MacKenzie River, N. W. T. ) 
Ducks per square mile: 1948 - 27.7 
1949 - 31.8 
: 1950 - 21.2 
Swans per square mile: 1948 - 1.5 
1949 - .04 
1950 - 1.7 
(Decrease from 1949 of 33. 3% in ducks). 
Percent Composition 1950 
Scoter 32.3 Baldpate 5.6 
Scaup 23.3 Unidentified ducks 2.3 
Pintail 12.2 Green-winged teal 1.7 
Mallard 11.1 Mergansers 1.3 
Golden-eye 9.1 Old-squaw 0.8 
(Remainder consisting of canvasback and bufflehead). 
