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
Dabblers^a	31	15	33
Divers^b	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

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]