Population information

Order name Anseriformes
Family name Anatidae
Scientific name Cygnus columbianus Common name Tundra Swan
Population name columbianus, W North America
Breeding range W Arctic North America Non-breeding range W USA
Red List Category Least Concern
Ramsar regions North America
Notes

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 63,700 63,700 [R671]
WPE 2 0 0 80,400 80,400 [R657]
WPE 4 0 0 90,000 90,000 [R651]
WPE 3 0 0 90,000 90,000 [R651]
WPE 5 2009 2009 105,000 106,000 Expert opinion [S6453] [R1179]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1982 1992 STA [R671]
WPE 2 1986 1996 STA [R657]
WPE 4 1991 2001 INC [R649]
WPE 3 1992 2001 STA [R651]
WPE 5 2000 2009 INC [R1179]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 640
WPE 2 1997 800
WPE 4 2006 900
WPE 3 2002 900
WPE 5 2012 1100

References

  • R671 - USFWS and CWS. 1992. 1992 status of waterfowl and fall flight forecast. Usfws Migratory Bird Management Office.
  • R657 - U.S. Fish and Wildlife Service and Canadian Wildlife Service. 1996. Waterfowl Population Status 1996. USFWS, Washington DC.
  • R651 - U.S. Fish and Wildlife Service. 2001. Waterfowl Population Status, 2001. US Department of the Interior,Washington, D.C. 50pp.
  • R649 - Trost, R.E. and Drut, M.S. 2001. Waterfowl harvest and status, hunter participation and success, and certain hunting regulations in the Pacific flyway and United States. US Fish and Wildlife Service, Portland, Oregon.
  • R1179 - U.S. Fish and Wildlife Service. 2009c. Waterfowl population status, 2009. U.S. Department of the Interior, Washington, D.C. USA.
  • R1534 - U.S. Fish and Wildlife Service. 2014. Waterfowl population status, 2014. U.S. Department of the Interior, Washington, D.C. USA.

Notes

  • S6453 - 2009 fall estimate (2011 estimate did not cover all sites).
  • S8819 - 2013 Midwinter Survey



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on