o> s & © SSCs 
L me Se Ge © ABSTRACT - Gee » to hese tt 
' An index ‘to thé 1961 mourning dove breeding population was 
‘obtained ty ‘a call-count survey conducted ‘throughout: the United 
‘States. Trénds in the breeding-population index were calculated 
‘for ‘thrée"mandgement units and for hunting and nonhunting States 
“within management units. -Trends in the breeding-population | 
“indexés ‘from 1960°to 1961 were as follows: Eastern Unit dow 
‘i péreent, Central Unit: down 10 percent, and “no change in the 
Western Unit. Long-term trends “in the breeding ‘indexes » however, 
are upward in the Central and Eastern Units. ~The index. for’ the 
Western Unit is essentially unchanged from 1953. For the United 
States as a whole, the 1961 breeding-populatiion index is down 7 } 
percent from 1960 and is 30 percent above the 1953 level. 
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