Population information

Order name Anseriformes
Family name Anatidae
Scientific name Cygnus buccinator Common name Trumpeter Swan
Population name Rocky Mountains
Breeding range Rocky Mountains of N USA Non-breeding range
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 3 0 0 2,500 2,500 [R114]
WPE 4 0 0 5,200 5,200 [S3528] [R197]
WPE 1 0 0 1,460 1,460 [R658]
WPE 2 0 0 2,500 2,500 [R115]
WPE 5 2010 2010 9,620 9,630 Expert opinion [S6413] [R1173]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1968 2000 INC [R114]
WPE 4 1968 2000 INC [R113]
WPE 1 1976 1986 STA [R658]
WPE 2 1980 1990 INC [R115]
WPE 5 2005 2010 INC [R1173]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 25
WPE 4 2006 50
WPE 1 1994 15
WPE 2 1997 25
WPE 5 2012 95

References

  • R114 - Caithamer, D.F. (Compiler). 2001. Trumpeter Swan population status, 2000. U.S. Fish Wildlife Service, Division of Migratory Bird Managment, Laurel, MD.
  • R197 - Dubovsky, J.A. 2005. Trumpeter Swan Survey of the Rocky Mountain Population. Winter 2005. USFWS, Lakewood, Colorado. http://mountain-prairie.fws.gov/species/birds/trumpeterswan/rm_survey_winter05.pdf
  • R113 - Caithamer, D.F. (Comp.). 1995. Survey of Trumpeter Swans in North America. U.S. Fish Wildl. Serv., Office of Mig. Bird Mgmt., Patuxtent Wildlife Research Center, Laurel, MD.
  • R658 - U.S. Fish and Wildlife Service and Canadian Wildlife Service. 1986. North American Waterfowl Management Plan: A strategy for cooperation. USFWS, Washington DC.
  • R115 - Callaghan, D.A. and Green, A.J. 1993. Wildfowl at risk, 1993. Wildfowl 44: 149-169.
  • R1173 - Trumpeter Swan Society, The: http://www.trumpeterswansociety.org. Accessed: April 2012.

Notes

  • S3528 - Count in February 2005 of 5,361 (199) adjusted to 5,200 by 483.
  • S6413 - 6,316 adults and 3,310 cygnets.



Copyright Wetlands International 2012

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