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<br />Table 7. Census data on the interior population of the least tern, 1985-1988'. <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 (Ion) where <br />nesting least terns <br />intermittently occur <br /> <br />Source <br /> <br />1. Ft. Peck Reservoir, <br />Missouri River, <br />Montana <br /> <br />..... <br />'-" <br /> <br />2. Below Ft. Peck <br />Reservoir, Missouri <br />River, Montana <br /> <br />3. Yellowstone River, <br />Montana <br /> <br />4. Below Garrison Dam, <br />Missouri River, North <br />Dakota <br /> <br />5. Lake Sakakawea, Missouri <br />River, North Dakota <br /> <br />6. Lake Oahe, Missouri River <br /> <br />7. Yellowstone River, <br />North Dakota <br /> <br />8. Cheyenne River, South <br />Dakota <br /> <br />-* <br /> <br />--** <br /> <br />Mississippi River Basin <br /> <br />2 <br /> <br />(Alfonso, unpublished data, Montana Piping Plover) <br />Recovery Committee 1988) <br /> <br />114 <br /> <br />169 <br /> <br />175 <br /> <br />22 <br /> <br />31 <br /> <br />4 <br /> <br />142 <br /> <br />20 <br /> <br />54 <br /> <br />18 <br /> <br />22 <br /> <br />(D. Christopherson, unpublished data) <br /> <br />12 <br /> <br />(Gorges, unpublished data) <br /> <br />192 <br /> <br />(Dryer and Dryer 1985, Mayer and Dryer <br />1988) <br /> <br />7 <br /> <br />(Mayer and Dryer 1988) <br /> <br />7 <br /> <br />(Mayer and Dryer 1988) <br /> <br />24 <br /> <br />30 <br /> <br />(Kreil and Dryer 1987, Mayer and Dryer 1988) <br /> <br />27 <br /> <br />26 <br /> <br />(Schwalbach et al. 1986, 1988; Schwalbach 1988) <br />