Ducks - The 1957 duck index is 24 percent below the average 
of the past eight years and compared to individual years is: 
22 percent below 1956 
36 percent below 1955 
30 percent below 1954 
41 percent below 1953 
28 percent below 1952 
16 percent below 1951 
1 percent above 1950 
Among the ducks there was little or no change in the 
population of mallards, blacks, and goldeneye. There 
were significant decreases in scaup, pintail, canvasback, 
redhead, baldpate, and ringneck. No important species 
increased significantly. 
Geese - The 1957 index for geese is eight percent below the 
average of the past eight years and compared to individual 
years is: 
27 percent below 1956 
29 percent below 1955 
2 percent above 1954 
27 percent below 1953 
17 percent above 1952 
20 percent above 1951 
16 percent above 1950 
The decrease was entirely among the Canadas, since 
the population of greater snow geese remained unchanged. 
Brant = The 1957 index for American brant is eight percent 
above the average of the past eight years, and compared to 
individual years is: 
l percent below 1956 
12 percent below 1955 
34 percent below 1954 
4 percent above 1953 
55 percent above 1952 
43 percent above 1951 
110 percent above 1950 
102 
