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首页> 美国政府科技报告 >Effect of Human Activity on Great Grey Owl Hunting Behavior in Yosemite NationalPark, California. Technical Report
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Effect of Human Activity on Great Grey Owl Hunting Behavior in Yosemite NationalPark, California. Technical Report

机译：人类活动对加利福尼亚约塞米蒂国家公园大灰猫头鹰狩猎行为的影响。技术报告

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In 1987 and 1988, a pair of Great Gray Owls were closely monitored at the meadowsof Crane Flat in Yosemite National Park to determine the effect of existing visitor activity levels on the pair's temporal and spatial hunting patterns, and to examine the frequency and nature of visitor-owl interactions in owl foraging areas. Although there was substantial overlap in the daily and spatial activity patterns of owls and visitors, the co-occurrence of owls and visitors in the meadows was low. Visitors were present in the meadow at the same time as an owl only 5% of the time or 33 visits (n=192) in 1987 and 10% of the time or 68 visits (n=200) in 1988. This resulted because of a difference in seasonal activity patterns between owls and visitors.

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