Waterfowl nesting success on uplands and nesting islands at Oak Hammock Marsh / Ed Houck
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TextPublication details: Brandon, MB : Brandon University, 1985.Description: v, 32 leaves : ill. ; 29 cmOnline resources: Abstract: Duck nesting was studied on uplands and nesting islands at Oak Hammock Marsh Wildlife Management Area, Manitoba. Uplands were studied in 1978 and both islands and uplands from 1980-84. A total of 625 normal nests of 11 species of ducks were located. Density of nests for the entire study was 1.85 nest/ha. Nest density on islands (46.5 nest/ha), was significantly greater (x2=124.8,4.d.f.,P(.001) than that on uplands (0.68 nests/ha). mallard (Anas platyrhynchos), blue-wing teal (Anas discors), gadwall (Anas stredera), and northern shoveler (Spatula clypeata) were the major species, accounting for 77.7% of all nests. The Mayfield 40% nest success rate for all areas was 51%. Nesting success on the uplands (N=219) was 25.8%, and that on islands (N=390) was significantly greater (x2=31.2,4d.f.,P(.001) at 69.5%. Thirty-two percent of all normal nests were unsuccessful, 33% (N=146) were destroyed, and 7% (N=45) were abandoned. Significantly more nests were destroyed on uplands than on nesting
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Thesis(B.Sc.)--Brandon University, 1985.
Includes bibliographical references (leaves 29-32).
Duck nesting was studied on uplands and nesting islands at Oak Hammock Marsh Wildlife Management Area, Manitoba. Uplands were studied in 1978 and both islands and uplands from 1980-84. A total of 625 normal nests of 11 species of ducks were located. Density of nests for the entire study was 1.85 nest/ha. Nest density on islands (46.5 nest/ha), was significantly greater (x2=124.8,4.d.f.,P(.001) than that on uplands (0.68 nests/ha). mallard (Anas platyrhynchos), blue-wing teal (Anas discors), gadwall (Anas stredera), and northern shoveler (Spatula clypeata) were the major species, accounting for 77.7% of all nests. The Mayfield 40% nest success rate for all areas was 51%. Nesting success on the uplands (N=219) was 25.8%, and that on islands (N=390) was significantly greater (x2=31.2,4d.f.,P(.001) at 69.5%. Thirty-two percent of all normal nests were unsuccessful, 33% (N=146) were destroyed, and 7% (N=45) were abandoned. Significantly more nests were destroyed on uplands than on nesting