concerning current waterfowl population status, and is intended for use 
primarily as a guide for setting the 1956-57 shooting regulations. 
Inasmuch as waterfowl management within the United States is on 
the basis of four Flyways, this report is organized accordingly. In doing this, 
the Flyways have arbitrarily been extended beyond the limits of the United 
States to include the breeding and wintering areas most closely associated with 
each Flyway. Thus, for winter surveys, Alaska, British Columbia, Alberta 
and western Mexico have been considered with the Pacific Flyway States; 
Saskatchewan, eastern and central Mexico with the Central Flyway; Manitoba 
and Ontario with the Mississippi Flyway; and Quebec, Newfoundland and the 
Maritimes with the Atlantic Flyway. Similarly, in summarizing data from 
the breeding grounds, it has been assumed that birds from Alaska, Northwest 
Territories, British Columbia, Alberta, and Saskatchewan are important to 
the Pacific Flyway hunters; that these same areas excepting Alaska and 
British Columbia supply birds to the Central Flyway; that birds from northern 
Alberta, Northwest Territories, Saskatchewan, Manitoba, and western Ontario 
move through the Mississippi Flyway; and that Alaska, northern Canada, and 
southern Canada from Saskatchewan to Newfoundland supply waterfowl to the 
Atlantic Flyway. | 
