/I In 
1980 
K m susnt 
MONTHLY WILDLIFE RESEARCH LETTER 
Illinois Federal Aid Projects W-66-R, W-S7-R. and W-88-R UBt^ny 
Department of Conservation and Natural History Survey, Cooperating 
c.. Sanderson and Eva Steger, Editors 
Urbana, Illinois 
September, 1930 
Vol. 23, No. 9 
Manipulation of Pheasant Habitat - W-66-R 
E. Warner 
Land use on the Sibley Study Area (SSA) was -H-dJin ,9^, ^ 
previous vears by mapp.ng^the ' d j° U of the land area (, 33 acres) 
Acreages £ame y ], 2 % in 1977, and with an average of 
compared with J- 2 * 1 •' b | q ' a | ns were planted on 1.3* of the SSA 
7.04 per year during 1962 9. 9 |n and w|th a yea rly 
(303 acres), compared with 0.94 in u79 an ' . qn 05 , r the j n 
average of B.J* during 1962-63. Row crops «re Pl«t«d or90.0< of the 
1930, similar to corn and soybean acreages planted from 1977 to 1.79. 
ThS<; vpar for the 8th consecutive summer, pheasant nest studies were 
t :r4 ^r.v: o, 7 . 
0,i|8, 0.12, 0.09, and 0.07 per acre in 1973 79, respectc.ely 
The estimated total of nests hatched ^ “J" <X£ 23(6):1) 
spring o^nests hatched per 
S^year^have* p rov i ded an accurat^predi ct i on of the estimated number of hatched 
nests on the area the subsequent summer (r - .9bJ. 
Table 1. Cock calls per 2-minute stop (May) and estimated numbers of nests 
hatched per section on the 20 -square-mile FCMU, 1976-80. 
Year 
1976 
1977 
1978 
1979 
1980 
Cock calls 
22.9 
7.3 
6.4 
6.1 
11.4 
Nests per section 
8.0 
2.2 
1.3 
1.1 
2.2 
