ABSTRACT 
An index to the. 1960 mourning dove breeding population War 
obtained by a call-count survey conducted throughout the United 
States. Trends in the breeding-population index are calculated 
for three management units and for hunting and nonhunting States 
within management units. Trends in the breeding-population 
indexes from 1959 to 1960 ave as follows: Eastern Unit up 5 
percent, Central Unit up 14 percent, and Western Unit down 10 
percent. Long-term trends in the breeding indexes show aub- 
stantial increases in the Central and Eastern Units and little 
change in the Western Unit. For the United States as a whole, 
the 1960 breeding-population index is up 6 pereent from 1959 
and is 40 percent above the 1953 level. 
iv 
