ROE-DEER CENSUS AND POPULATION ANALYSIS 



73 



Fig. I. — Map of the Danish Game Research Farm, Kalo. The position of the two woods 'Heste- 

 haven' and 'Ringelmoseskoven' is shown with the surrounding arable land. Black rectangles 

 in Ringelmose indicate location of traps. 



impossible to form any idea of the ability of roe-deer to escape detection. 

 The complete failure of our prior attempt at estimating herd size is most 

 striking, especially since this initial estimate was made by the forestry and 

 game personnel at Kalo, who had known the two woods for years and who 

 had spent part of every day there. The result was greeted with widespread 

 increduhty, and I believe that many people considered that our initial 

 counting methods were faulty. However, confirmatory results were obtained 

 when the owners of three or four other Danish estates decided to kill all 



