CONTENTS 
Abstract . Hi 
Introduction . 1 
Procedure . 2 
The call-count method .. 2 
Weighting factors . 4 
Randomization of dove-call routes . 4 
Long term trends . 5 
Trends in the Breeding Population Index - 1964 . 6 
Eastern Management Unit . 6 
Central Management Unit . 6 
Western Management Unit . 6 
Discussion of population index trends . 9 
Literature Cited . 10 
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