SOUTHERN ALBERTA - Continued 
A measure of the progress of the breeding season is estimated by 
the lone males present in the population. This is best characterized by 
the early breeders, mallards, pintails and canvasback. The data are pre- 
sented in Table 6. 
Table 6. Percent Lone Males in Early Nesting Species 
(Pintail, Mallard and Ganvesbere) 
Year Stratum A Stratum B Stratum C Province 
1956 86% 87% 716 
1957 | 90% 92% 89% 90% 
1958 85% 87% 16% 85% 
6-Yr. Average 804% 85% 72% 81% 

28 
