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 18: Sex Composition of Adult Ducks Found at Mink Dens


Table 18. Sex compositions of adult ducks found at mink dens (from Eberhardt 1974).
Males
Females
Percent female
Dabblersa
31
15
33
Diversb
4
14
78

a In decreasing order of abundance: blue-winged teal, mallard, gadwall (A. Strepera), pintail (A. acuta), northern shoveler(A. clypeata), and green-winged teal (A. crecca).
b In decreasing order of abundance: ruddy duck (Oxyura jamaicensis), redhead (Aythya americana), canvasback (A. valisineria), and lesser scaup (A. affinis).


Previous Section-- Table 17: Sex Composition of Mallards Found on Roads in Eastern North Dakota 1969-74
Return to Contents
Next Section-- Table 19: Apportionment of Mallard Remians Found at Red Fox Dens

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/table18.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 05:56:41 EST
Menlo Park, CA [caww54]