

Losses was obtained at Peoria. This apparent inability to cope with floods 
is somewhat surprising hecause of the. frequency of floods in the Chi- 
hese range of the species and the fact that Beebe reports that the 
birds occasionally swim.Its feneral aptitude for water is well known. 
It should be emphasized here that the relative importance of var- 
ious factors of productivity has never been quantitatively determined 
either in Illinois or elsewhere,and until this is done ve can only guess 
at the answer to management questions. 
In the lake region swamps are obviously the mainstay of this spec- 
les.iIn the other parts of the state it is found pxtnbivelty ih Or near 
river bottoms or upland sloughs or near the banks of drainage ditches. 
in each case the indication is that cover constitutes the limiting fac- 
pheasants.It has already been stated that the New Drift Prairie type 
would probably make excellent pheasant”eround but for the almost canplee 
im pF by 7 
absence of cover.It remains a.puzzle that thisstype should be notably 
unoro a 5 vi et whi 1} @ the oO} ase7iated-vreiri O Pe Taya with ckhhe esme lara 
af Cus u L y c ¥¥ ni a vil & SGA 1 abved BS CA LL 16 ee aie! © VGA, W Lb ist uit © VOLS a CLE &e 
ie Da 3 
cornfields with. standing corn in winter and with’an apparently similar 
lack of grassy sloughs or draws should support'an abundance of these 
> 
What Constitutes. P|! 


r=) 
easant Range:Relation to Drift Solls The complex in- 

termixture of drift and non-drift soils ‘im all of the Illinois types ex- 
cept the Lake region has already been discussed in Part I.The results of 
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J. 
plantings to date have also been discussed, 
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results in their bearing on the hypothesis first.advanced in the Iowa 
report that the successful establishment of, ringneck pheasant in a wild 
state is. limited to glacial drift’ soils, and the corollary of that hypo- 
thesis developed in the Ohio report is that the specie s may extend beond 
the glacial drift soils on river bottoms where drift material has been 
‘\ 
—~26< 
















