327 



Numerous questions of cause, effect, and controlling condition 

 are suggested by these data, some of them readily answerable and 

 others doubtfully so, but the discussion of ecological problems may 

 best be postponed until the data here presented may be brought into 

 comparison with those obtained from other trips, made at other sea- 

 sons and in other parts of the state. 



Table XII. Coefficients of Preference, Tabulated by Crops 



Corn 



Cowbird 



Horned lark 

 Crow-blackbird. . 



Crow . 



Field-sparrow. . 



Goldfinch 



Meadow-lark 

 Mourning-dove . 

 English sparrow 



o 

 u 

 u 



tfl 



"So 

 a 



.03 

 .09 

 .12 



.14 

 .37 

 .42 

 .46 

 .83 



1. 



