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May, 1918 FROM i?I]?LD AND STUDY 127 information, and rel?orts on the contents of 2690 stomachs of ha?vks 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 l?ortions 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, Sharl?-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 rel?orts of this kind would more clearly establish the economic value of many of the ral?tores. Our skel?tical ranchers are more interested in what a bird eats in California than in what is consumed by the same sl?ecies in the eastern states.