May, 1918 



FROM FIELD AXD STIDV 



127 



information, and reports on the contents of 2690 stomachs of hawks and owls. Unfortu- 

 nately, as was inevitable at the time, few of the birds examined as a basis of this work 

 were secured in California or even in western states. Such widely different conditions 

 exist in the eastern and western portions of the United States that the use of eastern data 

 does not allow of more than an inference as to the food habits of western birds. In that 

 no actual evidence as to the food of the Marsh Hawk, Ferruginous Rough-leg, Sharp-shin- 

 ned Hawk and Pigmy Owl in California is contained in the above cited standard work 

 and but slight evidence of the California food of other hawks and owls, the following re- 

 sults of stomach examinations are worth while recording. Additional reports of this kind 

 would more clearly establish the economic value of many of the raptores. Our skeptical 

 ranchers are more interested in what a bird eats in California than in what is consumed 

 by the same species in the eastern states. 



32 



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