MONTHLY WILDLIFE RESEARCH LETTER 
natural history survey 
JAN 16 ;976 
n . r „ . library 
Department of Conservation and Natural History Survey, Cooperating 
Glen C. Sanderson and Helen C. Schultz, Editors 
Urbana, Illinois 
December, 1975 
Vol. 18, No. 12 
Manipulatio n of Pheasant Habitat n r- ... 
“——— ————— k« t. Warner 
th* C ° m P U ^ er m , de \ pr °9 ram design is being synthesized to facilitate expansion 
tLlf seeded-roadside concept throughout east-central Illinois in order to insure 
that future block roadside seedmgs will offer maximum potential for enhancing 
ocal pheasant numbers. Presently, a model for selection of townships is en¬ 
visioned for Ford, Iroquois, Livingston, Champaign, and McLean counties. Three 
primary components comprise the model: ( 1 ) relative pheasant abundance, ( 2 ) 
roadside width and suitability for seeding, and ( 3 ) land use. 
tn thp e !?K Ve - Rh !: aSai ?t abundance has been indexed and ranked by township, according 
to the Illinois Rural Mail Carrier Census of 1973- Roadside characteristics will 9 
be extracted from data collected by John C. Cole in 1972 
thesis. A computer program is being developed that will 
ship, roadside width and suitability for seeding. 
for his Master of Science 
estimate, for each town- 
<•«.„= Land-use statistics have been extracted from the "Illinois Annual Farm 
CensusJownsh.p Summaries" for I 96 I through 1972 (latest available year of 
statistics). A computer program has been constructed to calculate for each 
anTnth^ff p ? rcanta f 5 acrease in row crops ’ ha V’ harvested small grains, 
?nr r / ar “ f 6 n6Xt MWRL ’ the ^termination of land-use parameters 
character ist?cs°of S rh PS b '“ k SSedi " 9 wi " be discussed. In addition, the 
witl be presented! 6 tOW " shlps 5u Sgested for future block roadside seedings 
Ecology and Management of Squirrels r M ... 
- -— C. M. Nixon, 
S. P. Havera 
and advers^effert ° f , the 2o6 “ acre Truetown Study Area had an immediate 
adverse effect on the resident gray squirrels. Livetrap captures in the Tq- 
entire 206 ~acres 8 fl^of fm Vf perCent ° f thS t0ta ' number of «ptures on the 
captures fl of ccPaft-I ? before cutting to 1.8 percent of the total number of 
captures (I of 55 ) after clear-cutting. 
all 
oTlT t r irZ S \V ta " ed 9ra y squirrels wh °s e Ptecut home ranges included 
part of the clear-cut were lower than recovery rates for squirrels whose 
precut home ranges did not include the clear-cut. Significantly fewer (P <0 10) 
adult males exposed to the clear-cut (2 of 17 , 11.8 percent) we^e recovered after 
o?“he 9 studv a a r raa Wlt B <" ° f 38, 28.9 percent) in the uncut portion 
ranges awayVroTit. ™ that the c,ear - cpt shifted thair homa 
