Production and habitat use by Canada geese at Freezout Lake, Montana / Daniel Lee Hook
Material type:
TextPublication details: Bozeman, MT : Montana State University, 1973.Description: viii, 53 leaves : ill. ; 29 cmOnline resources: Abstract: The production and use of nesting and brood habitat by Canada geese was studied from 1971 to 1972 at the Freezout Lake Management Area in northcentral Montana. Nesting increased 21.8 percent from 55 nests in 1971 to 67 nests in 1972. This accompanied a 10.7 percent increase in the total spring population and a longer nesting season. Average nest success for the two years was 70.5 percent with nest predation primarily by raccoons which accounted for 22.9 percent of nest loss. The average successful nest produced 5.44 goslings. Total production increased 12.7 percent from 1971 to 1972 (189-213). Two (33.3 percent) of the six neck-collared two-year-old females nested in 1971. Islands were the preferred nesting type with 54 (98.2 percent) and 59 (88.1 percent) of the nests being located on islands in 1971 and 1972, respectively. The decrease in relative use of islands as nest sites in 1972 occurred when only 48 percent of the available islands were utilized. In an effort to assess the eff
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Electronic Report
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Electronic Library | Non-fiction | HOO (Browse shelf(Opens below)) | Available | 1496 |
Thesis(M.S.)--Montana State University, 1973.
Includes bibliographical references.
The production and use of nesting and brood habitat by Canada geese was studied from 1971 to 1972 at the Freezout Lake Management Area in northcentral Montana. Nesting increased 21.8 percent from 55 nests in 1971 to 67 nests in 1972. This accompanied a 10.7 percent increase in the total spring population and a longer nesting season. Average nest success for the two years was 70.5 percent with nest predation primarily by raccoons which accounted for 22.9 percent of nest loss. The average successful nest produced 5.44 goslings. Total production increased 12.7 percent from 1971 to 1972 (189-213). Two (33.3 percent) of the six neck-collared two-year-old females nested in 1971. Islands were the preferred nesting type with 54 (98.2 percent) and 59 (88.1 percent) of the nests being located on islands in 1971 and 1972, respectively. The decrease in relative use of islands as nest sites in 1972 occurred when only 48 percent of the available islands were utilized. In an effort to assess the eff