2a, 
Average Doves Heard Calling Per Route (Log Scale) 
26 

‘ 
24 a 
22 
20 
18 Nonhunting States SAR 
16 
14 

12 


Horizontal lines indicate 10-year (1961-1970) averages 

1965 1966 1970 
Figure 8.-~Breeding mourning dove population indexes for the United States hunting and 
nonhunting States, 1961-1971 

