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RESULTS <br />Twentymile Park is divided into eight areas which conform to, <br />eight drainages (see Milner 7.5 min Quadrangle. Map). <br />Drainages A-D are considered part of the northern sector and <br />E-H in the southern sector. These drainages will be <br />referred to by letter only in the following results. <br />Nesting <br />Two sandhill crane nests were found in June, one at a large <br />pond in A (Section 33) and one in a small pond in B (Section <br />4). Crane activity was noted at the double .ponds in F <br />(Section 17) and was suspected in H, but no nests were <br />found. However, one nest was located in 1982 at the double <br />ponds (F). Since no willow occurred in any drainage, the <br />cranes nested in cattails (A) and in bulrush (B) in the <br />pond's tailwaters. The nest in B was intricately woven <br />bulrush which, like the cattail, had not fully emerged <br />during nesting. The birds were essentially exposed to <br />predation from the air and from the ground. Although both <br />nests were within 1 m of water, :the nest in B was easily <br />accessible on the ground. Reaching the nest in A required <br />some wading. <br />Finding the nests proved a difficult task in that the cranes <br />would not flush until an investigator was practically on top <br />of the nest. Although most drainages were searched, only <br />the two nests were confirmed. Later observations indicated <br />there were probably more nesting pairs. <br />8 <br />