An evaluation of the efficacy of a flushing bar device mounted on self-propelled hay mowers to reduce female duck mortality during haying in central Alberta, 1999 / Eric W. Butterworth and Brett K. Claverley
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TextPublication details: Edmonton : 2000.Description: 12 pAbstract: This study is a continuation of an ongoing research program to determine the effectiveness of flushing devices to reduce mortality of nesting female ducks during haying operations in central Alberta hay fields.During 1993, studies were initiated to determine the level of mortality of female ducks during haying and indeed significant numbers of ducks are killed by all types of hay mowers (Calverley 1993). In 1994, the first evaluation of a flushing bar occurred on tractor-pulled hay mowers (Calverley and Sankowski 1995). Calverley and Sankowski found that with the flushing bar no mortality occurred in their study,whereas, in fields mowed without the bar 48 percent of ducks actively incubating at the time of haying were killed.
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Edmonton Office Stacks | Non-fiction | NAWMP 041 (Browse shelf(Opens below)) | Available | 9881 |
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This study is a continuation of an ongoing research program to determine the effectiveness of flushing devices to reduce mortality of nesting female ducks during haying operations in central Alberta hay fields.During 1993, studies were initiated to determine the level of mortality of female ducks during haying and indeed significant numbers of ducks are killed by all types of hay mowers (Calverley 1993). In 1994, the first evaluation of a flushing bar occurred on tractor-pulled hay mowers (Calverley and Sankowski 1995). Calverley and Sankowski found that with the flushing bar no mortality occurred in their study,whereas, in fields mowed without the bar 48 percent of ducks actively incubating at the time of haying were killed.