The Jiily Estimate vs. the October Estimates 

 (Based on Questionnaires) 



Ctocks 



Total Bag - 6322 



Less Imports (Est. 90% survival - 900 



Bag of native cocks 5^+22 



Plus loss and Illegal kill (15%) 813 



(Native cocks only) 

 Total kill - native cocks 



, , 523F 



Plus stock (Est) 



Contributed by native birds only 62? 



Total cock Population (Oct. 1959) 6860 



Estimate of Population in Oct. 800^- 

 (July Survey 



Difference -llMt (-iM-.S^) 



The estimate in July is 1^.3^^ higher than the population Indicated 



by hunting statistics. Factors contributing to the error could be, 



1. a high estimate in July, 



2. higher than average mortality from Jiay to the hunt, 



3. a higher than estimated loss from crippling and illegal kill, 

 h, inaccuracies in the questionnaire. 



Some of these factors coxild be working to reduce the population from July 



to the end of the shoot. 



Hens 



(Native) surviving to October 1^537 



(July Estimate) 



Less bag 2028 



12509 

 Less loss and illegal kill (Est) 2028 



Post shoot population 



(based on July estimate) 10^81 



Since the July estimate for cocks was lM-.3/^ higher than the 



population indicated at the shoot, the population of hens after the shoot is 



revised. A reduction of 20/lJ is estimated due to the higher mortality rate of 



hens. 



Revised post shoot estimate 



Estimate based on July survey 10^81 

 Less 20J^ (est) 2096 



Final post season estimate 8385 



(Assuming that the mortality of hens would be higher than cocks from 

 July to the shoot and that the crippling loss would be greater for hens.) 



45 



