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Red-tailed hawk nests were the most common type in the area. A • <br />total of 12 red-tailed hawk nests were found: 6 on the proposed permit <br />area and 6 in the perimeter. Some of the nests were very close to <br />other nests, and probably were alternate nests within a single terri- <br />tory. Based on the spacing of nests and the reactions of adults <br />encountered, it is likely that the 12 nests found in 1993 were in nine <br />different red-tailed hawk territories. At least four pairs of red- <br />tailed hawks bred in the area in 1993. Three of those pairs fledged a <br />total of five young; the fourth pair incubated, but did not produce <br />any chicks. <br />One of the red-tailed hawk nests in the wildlife survey area in <br />SW/4 NE/4, Section 18 (RTH1, Exhibit 11-1) may have existed since at <br />least 1980. CROW records show that a U.S. Fish and Wildlife Service <br />(USFWS) researcher identified a large raptor stick nest in NW/4 SE/4 • <br />Section 18 in 1960. That year, the nest was listed as inactive. <br />Cooper's hawk nests were almost as common as those of red-tailed <br />hewks. Eleven Cooper's hawk nests, presumably in eight territories, <br />were found in 1993. Four of those nests were on the proposed permit <br />area and seven were in the one-mile perimeter. Five pairs of Cooper's <br />hawks successfully bred in the area. Each of those pairs fledged <br />three or four young (Table 6); a total of 17 young Cooper's hawks <br />fledged in 1993. No unsuccessful Cooper's hawk breeding pairs were <br />recorded. <br />Two pairs of great horned owls were found breeding in the area. <br />One pair of owls was using a nest on the proposed permit area (GH02, <br />Exhibit 11-1) that was probably originally built by Cooper's hawks; <br />the other pair of owls used an old red-tailed hawk or American crow • <br />28 <br />