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The winter of 1935-36 will go down in history as a killer. Probably no single winter since the tarn of the century, and possibly none since *The Big Snow" of 1881-82, has wrought equal destruction on bobwhite quail in Wisconsinaand lowa. ) This paper aims to collect under one cover such miscellaneous data on its effects as are available to the game research departments o! the two states. Lawrence E. Hicks is preparing a similar paper for Ohio. .. *'" ; . '~ ~ Losses in Wieonsin Since 1932 Wisconsin quail have been in a state of 8irruptic," i.e.. have built up to an extreme high and have spread northward and eastward into new range. Me year 1934-35 killed many, but in most counties not enough to prevent a prompt return to high levels during the favorable breeding season of 1935. A paper on the nature and extent of the irruption, and the quail losses of 1934-35, is in preparation by A. S. Hawkins. The cumulative effect of the winters of 1934-35 and 1935-36 was to push back the quail boundary a hundred miles southward and westward, and to thin out the residual population in the southwestern counties to perhaps ten per cent of their 1934 numbers. Large areas in this "regular range" are now entirely depopulated. Interpretation of this sudden shrinkage in distribution and density is complicated by two attendant circumstances: (1) The period 1932-1936 represents 9 *The Wisconsin graduate student group contributed to this paper as follows: Leonard W. Wing, photos and supervision of autopsies; Orville S. Lee, stomach analyses and body-measurements; Douglas E. Wade, field observations and weather charts; Arthur S. Hakins, Hilbert R. Siegler, Starker Leopold, field observations. Q Ralph C. Conway, State Conservation Department, also field officers of the Soil Conservation Service and the Resettlement Administration were especially helpful in sending in frosen birds. Dr. A. L. Stone of the Agronomy Department helped in identifying doubtful seeds. ~ "T t~. Wf A5-/ r4'ti;~ I.~,,~h ~~.. CL,,-