Large round hay bales as nest sites for greater Canada geese Oak Lake Manitoba / Ian D. Sharpe.
Material type:
TextPublication details: MB : 1978.Description: 36 p. : ill. , map ; 28 cmOnline resources: Abstract: The main objective of this study was to monitor the nesting effort and success of Greater Canada geese (Branta canadensis maxima) using natural and artificial nest sites at Oak Lake, Manitoba. Aerial and ground surveys were conducted during the months of May and June, 1978, and results of these surveys showed that a minimum of 33 nests were initiated in the Oak-Plum Lakes district. A minimum of 98 goslings reaching four weeks of age was estimated from nest re-checks and mortality rates derived from Brace (1972). Of the 33 nests, two were situated on large round bales. Both nests contained eight eggs, which was above the mean clutch size of 5.24 for all 33 nests. Seventy-four percent of the eggs from a sample of 10 re-checked nests were hatched.Thirty of the 37 bales placed in 1976 were judged as suitable nest sites on the basis of criteria established from the nesting survey. These 30 bales will last at least another year before their condition deteriorates to the point of being unsu
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Includes bibliographical references (p. 35).
The main objective of this study was to monitor the nesting effort and success of Greater Canada geese (Branta canadensis maxima) using natural and artificial nest sites at Oak Lake, Manitoba. Aerial and ground surveys were conducted during the months of May and June, 1978, and results of these surveys showed that a minimum of 33 nests were initiated in the Oak-Plum Lakes district. A minimum of 98 goslings reaching four weeks of age was estimated from nest re-checks and mortality rates derived from Brace (1972). Of the 33 nests, two were situated on large round bales. Both nests contained eight eggs, which was above the mean clutch size of 5.24 for all 33 nests. Seventy-four percent of the eggs from a sample of 10 re-checked nests were hatched.Thirty of the 37 bales placed in 1976 were judged as suitable nest sites on the basis of criteria established from the nesting survey. These 30 bales will last at least another year before their condition deteriorates to the point of being unsu