ABSTRACT 
An index to the 1963 mourning dove breeding population 
was obtained by a call-count survey conducted throughout the 
United States. Trends in the breeding population index were 
calculated for three management units and for hunting and 
nonhunting States within the management units. Trends in the 
breeding population indexes from 1962 to 1963 were as follows: 
Eastern Unit down 3.6 percent, Central Unit down 1.7 percent, 
and Western Unit up 3.8 percent. For the United States as 
a whole, the 1963 breeding population was down 0.8 percent 
from 1962. 
ae Summaries of call-count surveys conducted in Canada during 
1962 and 1963 are included. 
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