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 70 THI CONDOR Vol. XVII derricks and electric poles, as on the two-mile electric line between my ranch and Sunnyside, but have returned to their former nesting sites in trees when possible as is shown by the absence of nests in the ten-mile electric line between Sunnyside and Granger, which runs through an older section of the valley which is now abundantly supplied with large trees. Coincident with this adaptation, though, can be pointed out the great mor- tality among the young birds in the incompleteness of the adaptation, practi- cally total in the hay-derrick nests, and high in the electric pole nests, in the latter because of the insecurity against winds. A perfect adaptation would avoid the derricks, which are death traps during haying, and would result in building a nest securely enough fastened on an electric pole to avoid blowing down during storms. Palo Alto, Califorta, January 29, 1915. NESTING OF THE AMERICAN OSPREY AT EAGLE LAKE, CALIFORNIA By MILTON S. RAY WITH FOUR PHOTOGRAPHS BY THE AUTHOR URING the past season's work afield {1914) Chase Littlejohn and the writer traveled something over a thousand miles. One of the many side trips taken was from Susanville to Eagle Lake and back, in company with Mr. Frank P. Cady, the dis- -- trict's game warden. As we were Fig. 22. NEAR SCHULER, AT THE NORTH END o- EAOLE LAKE. THE REGIO. HERE IS BUT SPARSELY TIMBERED, IN STRIKIN6 CON- TST TO THE CONDITIONS AT THE LOWER END OF THE  engaged in gathering certain data for the Fish and Game Commission, in addition to our own personal field-work, Mr. Cady aided us in every way possible, besides placing his motor car at our disposal. Although we arrived at Trux- ell's on the east-central shore of Eagle Lake at dusk on May 16, it was not until we reached Schuler at the northern end of the lake, at noon next day, that we saw our first American Osprey ( Pandion haliaetus carolinenMs). The occurrence of this species was of particular inter- est to me as Eagle Lake is one of the few points in inland California from which the bird has been recorded as not mcommon during the summer. On account of the bad condi- tion of the roads we left the motor car at Schuler and continued on to Spalding's, our final destination, by motor boat. At Spalding's, which lies in heavy timber on the southwestern side of the lake,