USGS - science for a changing world

Northern Prairie Wildlife Research Center

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

Factors Associated with Duck Nest Success
in the Prairie Pothole Region of Canada

Appendix A


Table 1. Estimated density (pairs/km²) of breeding mallards on study areas (mean=26.8 km²) in the Prairie Pothole Region of Canada.
Study area Density of pairsa
1982 1983 1984 1985
Parkland
Earl Grey - - - 3
Hanley 7 7 3 5
Hay Lakes - 13 10 -
Holden - 10 - -
Inchkeith - - 1 3
Leask - - 3 3
Moore Park - 8 5 -
Penhold - - 2 3
Yorkton - - - 5
Mean 7 10 4 4
Prairie
Cartwright - 3 - -
Ceylon - 8 2 -
Craik - - 2 2
Denzil - - 4 2
Gayford - - - 3
Goodwater - 9 - -
Shamrock 5 7 3 3
Tichfield 4 - - -
Mean 5 7 3 3
Overall Mean 6 8 3 3
aExtrapolated from counts provided by Off.   Migr. Bird Manage., U.S. Fish and Wildl.   Serv., Laurel, Md.

Table 2. Estimated density (pairs/km²) of breeding gadwalls on study areas (mean=26.8 km²) in the Prairie Pothole Region of Canada.
Study area Density of pairsa
1982 1983 1984 1985
Parkland
Earl Grey - - - 1
Hanley 2 1 <1 2
Hay Lakes - 2 2 -
Holden - 1 - -
Inchkeith - - 1 <1
Leask - - 1 2
Moore Park - 1 1 -
Penhold - - 0 <1
Yorkton - - - 0
Mean 2 1 1 1
Prairie
Cartwright - 1 - -
Ceylon - 7 2 -
Craik - - 2 1
Denzil - - 2 1
Gayford - - - 2
Goodwater - 2 - -
Shamrock 1 2 2 1
Tichfield 1 - - -
Mean 1 3 2 1
Overall Mean 2 2 1 1
aExtrapolated from counts provided by Off.   Migr. Bird Manage., U.S. Fish and Wildl.   Serv., Laurel, Md.

Table 3. Estimated density (pairs/km²) of breeding blue-winged teals on study areas (mean=26.8 km²) in the Prairie Pothole Region of Canada.
Study area Density of pairsa
1982 1983 1984 1985
Parkland
Earl Grey - - - 2
Hanley <1 1 1 5
Hay Lakes - 9 8 -
Holden - 8 - -
Inchkeith - - <1 3
Leask - - 5 7
Moore Park - 7 7 -
Penhold - - 1 <1
Yorkton - - - 4
Mean <1 6 4 4
Prairie
Cartwright - 2 - -
Ceylon - 6 3 -
Craik - - 1 2
Denzil - - 4 6
Gayford - - - 3
Goodwater - 6 - -
Shamrock 3 6 1 0
Tichfield 2 - - -
Mean 2 5 3 3
Overall Mean 1 6 3 3
aExtrapolated from counts provided by Off.   Migr. Bird Manage., U.S. Fish and Wildl.   Serv., Laurel, Md.

Table 4. Estimated density (pairs/km²) of breeding northern shovelers on study areas (mean=26.8 km²) in the Prairie Pothole Region of Canada.
Study area Density of pairsa
1982 1983 1984 1985
Parkland
Earl Grey - - - 1
Hanley 2 1 <1 4
Hay Lakes - 2 3 -
Holden - 4 - -
Inchkeith - - 0 1
Leask - - 4 3
Moore Park - 4 1 -
Penhold - - <1 1
Yorkton - - - 1
Mean 2 3 1 2
Prairie
Cartwright - <1 - -
Ceylon - 3 1 -
Craik - - 0 1
Denzil - - 1 2
Gayford - - - 3
Goodwater - 7 - -
Shamrock 5 7 1 1
Tichfield 2 - - -
Mean 3 4 1 1
Overall Mean 2 3 1 2
aExtrapolated from counts provided by Off.   Migr. Bird Manage., U.S. Fish and Wildl.   Serv., Laurel, Md.

Table 5. Estimated density (pairs/km²) of breeding northern pintails on study areas (mean=26.8 km²) in the Prairie Pothole Region of Canada.
Study area Density of pairsa
1982 1983 1984 1985
Parkland
Earl Grey - - - 1
Hanley 3 <1 2 1
Hay Lakes - 2 1 -
Holden - 6 - -
Inchkeith - - 0 1
Leask - - 1 <1
Moore Park - 2 2 -
Penhold - - <1 1
Yorkton - - - 1
Mean 3 2 1 1
Prairie
Cartwright - 1 - -
Ceylon - 7 2 -
Craik - - 1 2
Denzil - - 2 4
Gayford - - - 2
Goodwater - 7 - -
Shamrock 5 4 2 2
Tichfield 2 - - -
Mean 4 5 2 3
Overall Mean 4 4 2 2
aExtrapolated from counts provided by Off.   Migr. Bird Manage., U.S. Fish and Wildl.   Serv., Laurel, Md.


Previous Section -- Literature Cited
Return to Contents
Next Section -- Appendix B

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/nestsucc/appa.htm
Page Contact Information: Webmaster
Page Last Modified: Friday, 01-Feb-2013 19:39:16 EST
Reston, VA [vaww54]