Northern Prairie Wildlife Research Center
The observations of the first 2 years of study at Delta, Manitoba indicate that (1) patrol of areas by a trained man helped reduce losses of unharvested grain in outlying fields, (2) a combination of gunfire and scaring devices was effective but gunfire had to persist for several evenings in wet fields and be repeated when the harvest was long delayed, (3) ducks need not be killed if scaring is to be effective.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/literatr/disturb/bibli095.htm
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Menlo Park, CA [caww54]
