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<br />Table 7 (continued) <br /> <br />Location <br /> <br />Number of adult <br />least terns <br />1985 1986 1987 1988 <br /> <br />Approximate <br />length of river <br />stretch (km) where <br />nesting least terns <br />intermittently occur <br /> <br />Source <br /> <br />32. Bitter Lake National 8 6 6 <br />Wildlife Refuge, New <br />Mexico (Pecos River) <br /> <br />(Shomo, 1988 and S. Williams, New Mexico Game and <br />Fish Department, unpublished report) <br /> <br />Total 2952 4113 4932 4702 <br /> <br />3308 <br /> <br />~The census results should be viewed in light of the extent and frequency of census efforts. Increases or decreases from year <br />to year may not be related to reproductive performance. <br />* no census conducted in that year. <br />** area surveyed but no birds found <br /> <br />>-' <br />"" <br /> <br />.... .~." <br />