The effects of haying operations on duck nesting success : H. Pengelly and W. Cowan. interim report /
Material type:
TextPublication details: 1978. Ducks Unlimited Canada,Description: iv, 30 p. : ill. , map ; 28 cmOnline resources: Abstract: Flushing bars were attached to tractors in a test to save duck hens and eggs from destruction during harvest operations in intensively managed legume-grass haylands in the Erickson and Shoal Lake areas of Manitoba.Four experimental and eight control trials were conducted in co-operation with farmers. The flushing bars were found to be successful but predation on nesting hens in this newly-exposed habitat was considered significant. Nest success was very low after cutting (17%)compared to early initiated nests that hatched before mowing (80%).Recommendations were made to supply flushing bars to co-operating farmers and to seek an alternative, more widely applicable instrument for flushing hens in the future in view of rapid changes in machinery design A method was proposed to test the ability to increase nest success.
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Electronic Report
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Includes bibliographical references (p. 15).
Flushing bars were attached to tractors in a test to save duck hens and eggs from destruction during harvest operations in intensively managed legume-grass haylands in the Erickson and Shoal Lake areas of Manitoba.Four experimental and eight control trials were conducted in co-operation with farmers. The flushing bars were found to be successful but predation on nesting hens in this newly-exposed habitat was considered significant. Nest success was very low after cutting (17%)compared to early initiated nests that hatched before mowing (80%).Recommendations were made to supply flushing bars to co-operating farmers and to seek an alternative, more widely applicable instrument for flushing hens in the future in view of rapid changes in machinery design A method was proposed to test the ability to increase nest success.