ol a ee ee ae a re 
TGETOMICTHON «4 sw et ee ee ee 
PrOCCHUMS 2 « 6 «WOW oe oO pk me ew 
The opli-count method . . . 2. 6. 2s we ow 
Weighting factors . ... . «© » © ew we we 
Long-term trends . 2. 1 2 «© « « ss © «oe ew ww 
Trends in the breeding-population index - 1961...... 
Eastern management UNIt «we ww ew ee tw ww 
Central management ater pa 0S oot we we ne cs a 
Western management PPPs 8 22k feed Gee dete Ben ke es. 
Discussion of population-index trends .....+..es. 
Literature cited . . . 2. +. + +s «ss. FAC), an cae Soh ong as ah ok 
NOTE: This status report was compiled in the short time 
‘between the close of the survey period and the date 
of the Dove Regulations meeting. All data could not 
be checked completely in that time. 
iii 
¢ 
oA Nf Ff Ff TF FW WwW Ww PB 
