75 
Table V.- Species Composition of the May 1954 Waterfow] Population of 
Southern Manitoba, Aerial Data. 
Population Indices 
Species Stratum A Stratum B Strata A and B 
Pintail 36,500 26, 600 63,100 (10. 5%) 
Mallard . 138, 400 116, 900 255, 300 (42, 2%) 
Baldpate 9, 800 7,500 17, 300 ( 2, 9%) 
Shoveler 10,400 8,600 19,000 ( 3. 1%) 
Gadwall 7,500 900 8,400 ( 1.4%) 
B-w. teal 45,600 22, 100 67, 700 (11. 2%) 
G-w. teal 2,900 5,000 7,900 ( 1.3%) 
Scaup* 56, 800 37, 000 93, 000 (15.5%) 
Canvasback 26, 700 4,100 30, 800 ( 5.1%) 
Redhead 13, 300 4,500 17,800 ( 2.9%) 
Ring-necked 3,600 ‘ 500 4,100 ( 0. 7%) 
Ruddy 3, 600 900 4,500 ( 0.7%) 
Golden -eye 2, 300 4,100 6,400 ( 1.1%) 
Bufflehead 3, 900 4,100 8,000 ( 1.3%) 
Scoter 300 - 300 ( tr. ) 
Merganser 300 - 300 ( tr. ) 
hat i lt ee 
Total Ducks 361,900 242, 800 604,700 100% 
Coots 6,900 2,000 8, 900 
* Includes scaup in flocks and considered to be migrants. Flock totals 
were: Stratum A ~- 36,300; Stratum B - 16,900. These flocks 
were not assumed to have a 50:50 sex ratio and were not 
corrected for absent hens. 
An indication of the progress of the nesting season is given by the percentage 
of the observed population consisting of lone males, presumably with hens on the 
nest. 
Table VI indicates that there was a considerable increase over last year in 
the percentage of lone drakes for the entire two strata. This may be taken to 
indicate :a more healthy situation than was found last year. 
Table VI. - The Progress of Early Nesting (Percent of Lone Males in Ducks 
Year 
1953 
1954 
Observed by Air) in Southern Manitoba. 
% Males in Stratum A % Males in Stratum B % Males in Strata A and B 
29.4% 34.6% 31.6% 
39.2% 51.2% 44.1% 
