374 INFLUENCE OF MAN 



season census was taken very early. 



The bag in 1935*" on one area, Pigeon River State Forest, was 17.3 per cent while on a 

 second area, Escanaha River Tract, it was 17.4 per cent. But the corresponding figure — 

 percentage of September population — taken on the same area as in 1932 proved to be only 

 10 per cent. Thus the actual hunter take in 1932 was probably nearly double that indicated. 

 The results correspond remarkably close to those secured in New York. 



Trippensee's analysis of three areas in the Superior National Forest, Minnesota, on which 

 both hunter tallies and before-and-after hunting season censuses* were taken, vary widely as 

 to hunting take. In one area of 1,280 acres the take was only 9.4 per cent whereas in another 

 of 2,560 acres, it was 38.2 per cent. The average for the 6,400 acres in the three areas was 

 19.7 per cent. While apparently more variable, these figures are but slightly higher than 

 those of Michigan and New York. 



EXPLANATORY POSTERS AND REPORT CARDS WERE TESTED 

 AS A METHOD OF SEClfRING HUNTER KH.I, RECORDS 



While not based on direct field studies, anollx'i and iiKire extensive method of determining 

 the per cent bagged has been possible through the correlation of the recorded grouse kill by 

 counties'"' with county game habitat maps (which are completed for a number of counties in 

 New York State). In addition to these two sources, it is also necessary to know the average 

 density of the grouse population for the year in question. This is obtained friiin the field 

 censuses on the various grouse survey areas. 



From the game habitat map is obtained the quantity of grouse cover. The components of 

 this total are weighted according to quality to get the quantity of cover of a quality equiv- 

 alent to that on the survev areas. To this is applied the grouse-per-acre figure from the field 



* CcDtUfet on Imth tlir Mirhican and Minnriuln sludirs wrre nnnir b>- King'B gridiron method. 

 A Taken from the hunlrr't rrporti obuinrd upon iviuance of new licrnaes. 



