. Behavior of mule deer on the Keating Winter Range. Mule deer Oregon Behavior; Animal behavior Oregon. Climate Annual precipitation averages about 16 inches (40 cm) and occurs primarily during the winter. Precipitation varies with topography; lower elevation stations to the south and west are drier than highland stations to the east and north. Snow is common, accumulating to depths up to 20 inches (50 cm), with drifts rarely ex- ceeding 40 inches (1 m). Average daily temperatures for December through March for nearby regularly reporting stations are shown in figure 5. With the exception of Ri
. Behavior of mule deer on the Keating Winter Range. Mule deer Oregon Behavior; Animal behavior Oregon. Climate Annual precipitation averages about 16 inches (40 cm) and occurs primarily during the winter. Precipitation varies with topography; lower elevation stations to the south and west are drier than highland stations to the east and north. Snow is common, accumulating to depths up to 20 inches (50 cm), with drifts rarely ex- ceeding 40 inches (1 m). Average daily temperatures for December through March for nearby regularly reporting stations are shown in figure 5. With the exception of Richland, mean monthly temperatures are lowest in January. Richland also is the warmest of these stations during the winter. Lengthy periods of extreme cold are infrequent, but some have lasted as long as 20 days. Minimum temperatures may drop into the -30 °F (35 °C) range locally. Minimums of -50 °F (45 °C) have been recorded at several nearby stations in eastern Oregon. Air temperature °C °F 10- 5- -40 0- •5- •50 -30. -2 0 _L DEC JAN FEB MAR ? Baker radio station KBKR * Baker airport o Durkee • Halfway ? Richland Figure 5—Average daily temperatures for nearby regularly report- ing stations; based on 10-year period, December 1966 to March 1976. Methods During the active period of the study, 1976 to 1979, two broad classes of dynamic or changing information were collected through ocular estimates and meteoro- logical instruments: (1) animal variables (time of day, and location and number of animals); and (2) weather variables (solar radiation, air temperature, windspeed, and wind direction). Weather data were recorded automatically at 16 locations and were complemented by general visual observation of cover and depth of snow, cloud cover, and precipitation. Site characteristics such as aspect, slope, vegetation height, and cell coordinates were also determined. 5. Please note that these images are extracted from scanned page images that may have been digitally enhan
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