CONTENTS 
Abstract . iv 
Introduction . 1 
Procedure . 2 
The call-count method ... .... 2 
Weighting factors . 3 
Randomization of dove call-count routes . 3 
Long-term trends . 4 
Trends in the Breeding-Population Index - 1965 . 5 
Eastern Management Unit . 5 
Central Management Unit . 5 
Western Management Unit . 6 
Discussion of population index trends ... 6 
Literature Cited . 7 
iii 
