il 
35.4 percent increase in breeding population 1954-1953 
29.6 percent increase in broods 1954-1953 
Broods per pair ratio - 1952, 1:2.4; 1953, 1:1.9; 1954, 1:1.9 
Manitoba 
Area- West half of province from International Boundary north to 
Township 26. 
1953 1954 
Size of sample - square miles 50 50 
Breeding pairs per square mile 24.5 32.8 
Water areas per square mile - May 4.3 6.2 
Species Breakdown 

Species 1953 1954 
Mallard 429 ; 548 
Pintail 137 173 
Gadwall 21 32 
Baldpate 78 81 
Shoveler 64 38 
Blue-winged teal 210 242 
Green-winged teal 46 : 47 
Canvasback 94 167 
Redhead 42 91 
Lesser scaup 75 161 
Ring-necked duck 12 12 
Ruddy duck 17 38 
Bufflehead 2 il 
Total Pairs . 1227 1641 
The transects show an over-all increase of 33 percent in breeding population. 
All species increased with the exception of the shoveler which were reduced 41 per- 
cent. Increases shown by the diving ducks were most conspicuous, 
