Mourning Dove Status Report, 1973

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  • Mourning Dove Status Report, 1973 Book Detail

  • Author :
  • Release Date : 1974
  • Publisher :
  • Genre : Bird populations
  • Pages : 44
  • ISBN 13 :
  • File Size : 76,76 MB
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Mourning Dove Status Report, 1973 by PDF Summary

Book Description: Mourning dove population indices, as determined from the nationwide Call-Count Survey, decreased from 1972 to 1973 by 7% in the Eastern Management Unit, by 8% in the Central Management Unit, but increased by 8% in the Western Management Unit. The 1973 indices were below the 10-year means, 1963-1972, by 9% in the Eastern Unit, 6% in the Central Unit, and 4% in the Western Unit. Regression analyses of the call-count data for 1963-73 indicate a statistically significant downward trend in dove breeding populations in all management units; mean rates of decline per year were 1% in the Eastern, 2% in the Central and 4% in the Western Unit.

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Mourning Dove Status Report, 1973

Mourning Dove Status Report, 1973

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Mourning dove population indices, as determined from the nationwide Call-Count Survey, decreased from 1972 to 1973 by 7% in the Eastern Management Unit, by 8% i