USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Impact of Red Fox Predation on the Sex Ratio of Prairie Mallards

Table 12: Annual Survival and Recovery Rates for Adult Mallards

Table 12. Annual survival and recovery rates for adult male and female mallards banded before the hunting season in Minor Reference Area 131, 1963-67a
Survival rate
Recovery rate
Year
Male
Female
Male
Female
1963
0.672
0.560
0.055
0.031
1964
0.611
0.482
0.069
0.045
1965
0.799
0.739
0.049
0.029
1966
0.585
0.536
0.059
0.044
1967
0.725
0.766
0.062
0.040
Average
0.678
0.617
0.059
0.038

a Data from Anderson (1975). Banded samples of each sex ranged from 201 to 1,668 birds.

Previous Section-- Table 11: Estimated Red Fox Predation Rates on Mallards
Return to Contents
Next Section-- Table 13: Means, Standard Deviations, and Correlations Among Adult Mallard Survival and Recovery Rates

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/mammals/sexratio/table12.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 05:56:34 EST
Menlo Park, CA [caww54]