12 
Breeding Population Trends 
(1953 Figures Corrected to Eliminate Scoters, Mergansers, Eiders and Old Squaws.) 
Table I. - Lake Claire - Athabaska Delta, Alberta, 2,000 Square Miles. 
1953 1954 
Ducks per square mile 50.4 19.6 
Est. pop. index 100, 744 39,199 
% change from previous year - 61.1% 
Percent Species Composition-1954 

Species Percent Species Percent 
Mallard 27.9 Bufflehead os 7 
Canvasback 17.6 Golden-eye Lut 
Pintail 13.1 Ruddy duck 227 
Scaup 9.6 Gadwall 2.4 
Redhead 8.0 Green-winged teal 2.1 
Baldpate 5.0 Ring-necked 1.5 
Shoveler 3.8 Blue-winged teal 0.9 
Table II. - Hay Lakes, Alberta, 200 Square Miles. 
1953 1954 
Ducks per square mile 123.8 99.0 
Est. pop. index 24, 768 19, 801 
% change from 1953 - 20.1% 
Percent Species Composition-1954 
Species Percent Species Percent 
Mallard 34.2 Green-winged teal foe 
Redhead 12.1 Scaup Led 
Baldpate 11.8 Bufflehead i 
Canvasback 10.5 Golden-eye 1.2 
Shoveler 10.0 Ring -necked .6 
Pintail 9.5 Gadwall 4 
Blue -winged teal 3.6 Ruddy duck 4 

