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p. 24 <br />WILDLIFE <br />sandpits. The same can be said for plovers. See tables 2B and 2C for a comparative analysis of <br />the productivity of terns and plovers using natural habitat versus artificial habitat provided by the <br />sandpits. <br />Table 2B <br />Tern Productivity <br />1987 NGPC Survey <br />colonies that fledged young <br />young fledged per site at productive <br />colonies surveyed <br />young fledged per site for all colonies <br />surveyed <br />Source: Dinan (1987) <br />colonies that fledged young <br />young fledged per site at productive <br />colonies surveyed <br />young fledged per site for all colonies <br />surveyed <br />Source: Dinan (1987) <br />Sandbars Sandpits <br />86% 40% <br />3.8 3.8 <br />3.2 1.5 <br />Table 2C <br />Plover Productivity <br />1987 NGPC Survey <br />Sandbars Sandpits <br />46_ <br />30% <br />2.7 2.7 <br />1.3 0.8 <br />The Fish and Wildlife Service, as part of the biology workgroup of the Platte River Man- <br />agement Joint Study (see chapter IV), evaluated habitat suitability for Least Terns and Piping Plovers <br />nesting in the Platte area (USFWS 1987d). The consensus of the workshop participants was that <br />unobstructed channels must be at least 500 feet across, the sum of the widths of water - bearing <br />