Table 5.1. Fawn-at-heel ratios during mid-June and estimated percentage 

 of females productive and population fawns: 100 females ratio 

 during June. 



Three sources of data used: 



1) Percentage of female population older than yearling. 



2) Percentage of yearlings that emigrated. 



3) Percentage of females observed during June that were not with 

 other adult deer. 



Numbers in this column obtained by multiplying fawns: female X 

 100 X proportion productive (1.63 X 100 X 0.89 = 145). 

 Data from adjacent NCRCA study area. 

 Total does not include 1975 NCRCA data. 



then compared to fawn: female ratios for full coverage aerial 

 surveys during autumn, early winter, and spring, to determine 

 survival. Another ratio determined for June each year was an 

 estimate of what the annual maximum fawn: female ratio could 

 have been (Table 5.2). This was obtained by using the highest 

 observed fawn-at-heel ratio (1.76 fawns : female) and also 

 assuming that all females except yearlings were pregnant. 



During 1975-1986, an average of 14% (range 0-42%) of 

 potential fawn production was lost prior to the time fawn-at- 

 heel ratios were obtained in mid-June (Table 5.3). This loss 

 of potential production represented 18% of the total 



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