Vol. 9, No. 6 
Page 5 
German millet 
(Setaria italica) 
Sassafras 
12 
12 
7 
(Sassafras albidum) 
Smal1 wild bean 
11 
11 
8 
(Strophastyles leiosperma) 
Climbing false buckwheat 
9 
9 
9 
(Polyqonum scandens) 
Oaks 
7 
Forbes Area 
7 
10 
(Quercus sdd.) 
Korean lespedeza 
44 
46 
1 
(Lespedeza stipulacea) 
Wheat 
31 
33 
2 
(Triticum aestivum) 
Milo 
27 
28 
3 
(Sorqhum vulqare) 
Common ragweed 
20 
21 
4 
(Ambrosia artemisii fo! ia) 
German millet 
19 
20 
5 
(Setaria italica) 
Fall panicum 
18 
19 
6 
(Panicum dichotomiflorum) 
Smooth crabgrass 
17 
18 
7 
(Diqitaria ischaemum) 
Corn 
16 
17 
8 
(Zea mays) 
Pigweed 
15 
16 
9 
(Amaranthus retroflexus) 
13 
14 
10 
5- Responses of Prairie Chickens to Habitat Manipulation R. L. Westemeier 
During the spring of I 966 , 19 areas knoy/n or reported to contain remnant 
flocks of prairie chickens were systematically cruised in search of booming grounds. 
Nine of the 19 areas were in addition to the 10 areas which have been censused 
annually since 19&3* The areas range from 10 to 16 square miles in size. 
On or within one-mile of the annual census areas 120 prairie chicken cocks 
were found in 1966 , and 62 other cocks were found on the 9 new areas, thus totaling 
182 cocks. Several other southern Illinois areas reportedly containing chickens 
will be checked as time permits in the future. 
The expanding effort to learn the distribution and status of Illinois' 
remaining prairie chicken population has revealed a second area, besides Bogota, 
which appears to have high potential as a successful management area if sufficient 
action is immediately forthcoming. The Farina census area is centered on a 
20 -mile length of contiguous prairie chicken range extending from prairie farmland 
west of Steven A. Forbes State Park (Marion County) north to LaClede (Fayette 
