Evaluation of Factors. As already brought out under Part I, 
cover undoubtedly limits quail in the intensively cultivated northwestern

and central plains, but by the time the southeastern hill section is 
reached there is a surplus of cover as far as acreage goes, and probably

a corresponding excess of predators and shortage of widely distributed 
grain feeds. This does not prove that the excess covert acreage is of the

right kind or quality for maxinmn quail productivity. It probably is 
not. 
Present agricultural trends, if not deliberately modified for 
the sake of game crops, may be expected to gradually accentuate both the

deficiency of cover in the good lands of the northwest, and the quantita-

 
Neither in Ohio or in any of the states so far surveyed has 
there been any evidence of quail cycles due to epidemic diseases. Dr. Green

has recently reported that he has not yet tested quail as to susceptibility

to Tularemia. All of the evidence indicates that they are so far free from

such diseases. 
Predators undoubtedly strongly affect the Ohio quail crop, but 
just how, where, and to what extent remains a question for research to 
answer. The various species are covered in a separate section. 
As to hunting, I cannot but conclude that in a thickly popu- 
lated state like Ohio, quail can no longer stand up under statewide open

seasons without the aid of statewide cultural measures. Considering the 
nature of these measures, their sudden execution on a statewide scale seems

literally impossible, even after research has made clear just what they 
are. 
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