USGS - science for a changing world

Northern Prairie Wildlife Research Center

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

Distribution and Abundance of Predators that Affect
Duck Production: Prairie Pothole Region

Species Accounts -- Corvids


Common Raven

Habitat and History. Before settlement, the common raven was widely distributed in the prairie pothole region of Canada and was an occasional resident in portions of the region in the United States, but by the early 1900's, it was absent from nearly all of the region (Judd 1917; Potter 1943; Houston 1949; Stewart 1975; Houston 1977; South Dakota Ornithologists' Union 1991). The geographic breeding range of this species no longer includes the prairie pothole region but includes the adjacent forested region (Robbins et al. 1983; Godfrey 1986).

Population Structure. Population structure and nesting behavior of the common raven are similar to those of the American crow; populations consist primarily of breeding pairs and nonbreeding yearlings (Bent 1964; Knight and Call 1980).

Distribution and Abundance

Common ravens were seen in four study areas (Lake Park, Leask, Penhold, Yorkton) in the aspen parkland near transition forest (Fig. 16). They were seen regularly in one study area (Leask) where they were uncommon, and once each in the other three areas, where they were scarce; nests were not found.


Previous Section -- Species Accounts - American Crow
Return to Contents
Next Section -- Species Accounts - Northern Harrier

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/birds/predator/species/raven3.htm
Page Contact Information: Webmaster
Page Last Modified: Friday, 01-Feb-2013 19:49:38 EST
Menlo Park, CA [caww54]