Breeding -population. Index (millions) 
Figure 3. A Comparison of Trends in Breeding-population 
Indexes for Hunting and Nonhunting States 
within Management Units* 
40 
35 
30 
25 
20 
15 
10 U 
5 
0 
Nonhunting States 
* 1 
-L. J, 
1953 1954 1955 1956 1957 1958 1959 I960 1961 1962 1963 1964 
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