Figure 3. 
40 
— —_ N Nw wo Ww 
So vi =] ui fm] ui 
Breeding-population Index (millions) 
ff 
Vi 
{ 
of 

A Comparison of Trends in Breeding-population 
Indexes for Hunting and Nonhunting States 
within Management Units. 
CENTRAL UNIT 
Hunting States 

“ EASTERN UNIT 
Hunting States 
a 
Nonhunting States 
on @2 ae op > a oD Gn ee, 
ae WO 0 ee op on ae a ee ee a 7 EY OS Gy PD DE a ey GN ae OD SNS eh een Ven oe ee 
na 

1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 
