Prairie Chickens 



163 



This original distribution of the two species is of more than academic im- 

 port. Without it we cannot distinguish acquired range from original range. This 

 is essential in diagnosing the behavior of populations, and in appraising the op- 

 portunities for management. 



PRAIRIE CHICKENS 



AS DETERMINED BY A 



GAME SURVEY 



OF THE NOPTH-CENTRAL STATES. 



MADE BY ALOO LEOPOLD IN 1928-1929 FOR THE 



SPORTING ARHSIAMMUNITION MANUFACTURERS'INSTITUTE 

 MICKIOAN BY WILES D.Pmmt 



^-Probable original So. 

 boundary Pinnated Grouse 



Present Range (miwd range shorn as Stwptal) 

 Present Remnants or outposts 

 Former Remnants -date last seen ID right 

 Present Number m Co. fflESSSS 

 New Range -date first seen to left. 



Drift Birds seen (dale to tight) 

 Winter Migrants only ( date to right) 

 Nestinq Birds only 



MAP 14 



The present distribution of the two species in Wisconsin is accurately shown 

 on Map 14. This Wisconsin map is a combination of one drawn by Leopold, 

 and data gathered by Gross and Schmidt for the Wisconsin Prairie Chicken In- 

 vestigation, a preliminary report of which is about to be published. Both species 

 now extend to the north boundary of Wisconsin, and both are found in suitable 

 localities throughout Minnesota and the upper peninsula of Michigan but the 

 distribution in Minnesota was not mapped. This extension into northern Michi- 



