Population information

Order name Pelicaniformes
Family name Phalacrocoracidae
Scientific name Phalacrocorax auritus Common name Double-crested Cormorant
Population name auritus
Breeding range NE & Central North America Non-breeding range Gulf of Mexico, Florida
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 2 0 0 943,000 1,886,000 [R298]
WPE 3 0 0 943,000 1,890,000 [R298]
WPE 4 0 0 943,000 1,890,000 [R298]
WPE 1 0 0 40,000 40,000 [R164]
WPE 5 2000 2011 947,000 1,020,000 Expert opinion [R1174] [R1274] [R1303] [R1304] [R1305] [R1306] [R1307] [R1308] [R1309] [R1310] [R1311] [R1312] [R1313] [R1314]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1966 1996 INC [R565]
WPE 3 1966 2000 INC [R563]
WPE 4 1966 2000 INC [R563]
WPE 1 1981 1991 INC [R164]
WPE 5 2000 2011 STA? No idea [R1174]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 1997 14000
WPE 3 2002 14000
WPE 4 2006 14000
WPE 1 1994 400
WPE 5 2012 9800

References

  • R298 - Hatch, J.T. 1995. Changing populations of double-crested cormorants. Colonial Waterbirds 18 (Spec. Publ. 1): 8-24.
  • R565 - Sauer, J.R., Schwartz, S., Peterjohn, B.G. and Hines, J.E. 1996. The North American Breeding Bird Survey Home Page. Version 94.3 Natl. Biol. Serv., Patuxtent Wildlife Research Center, Laurel MD. URL: http://www.mbr.nbs.gov/bbs/bbs.html.
  • R563 - Sauer, J. R., J. E. Hines, and J. Fallon. 2001. The North American Breeding Bird Survey, Results and Analysis 1966 - 2000. Version 2001.2, USGS Patuxent Wildlife Research Center, Laurel, MD.
  • R164 - Croxall, J.P. (ed.). 1991. Status and Conservation of the World's Seabirds: A Supplement. ICBP Technical Publication No. 11. Cambridge, UK.
  • R1174 - Tyson, L.A., Belant, J.L., Cuthbert, F.J. and Weseloh, D.V. 1999. Nesting populations of Doublecrested Cormorants in the United States and Canada.
  • R1274 - Environment Canada. 2012. Status of Birds in Canada 2011: http://www.ec.gc.ca/soc-sbc/index-eng.aspx?sY=2010andsL=e)
  • R1303 - Wires, L.R., F.J. Cuthbert, T. Arnold. 2011. The American White Pelican and Double-crested Cormorant in Minnesota in 2010: Distribution, abundance and population change. Final Report to MN Department of Natural Resources, State Wildlife Grants Program. St. Paul, MN. May 2011.
  • R1304 - Watts, B. D., B. J. Paxton. 2009. Status and distribution of colonial waterbirds in coastal Virginia: 2009 breeding season. CCBTR-09-03. Center for Conservation Biology, College of William and Mary/Virginia Commonwealth University, Williamsburg, VA 21 pp.
  • R1305 - Melvin, S. 2010. Survey of Coastal Nesting Colonies of Cormorants, Gulls, Night-Herons, Egrets, and Ibises in Massachusetts, 2006-08. Final Report. Natural Heritage and Endangered Species Program Massachusetts Division of Fisheries and Wildlife. Westborough, MA. December 2010.
  • R1306 - Drilling, N. E. 2007. South Dakota Statewide Colonial and Semi-colonial Waterbird Inventory with a Plan for Long-term Monitoring: Final Report. SDGFP Wildlife Division Report 2008-01A. RMBO Tech. Rep. M-ColonySD-04. Rocky Mountain Bird Observatory, Brighton, CO. 80 pp.
  • R1307 - Drilling, N. E. 2007. South Dakota Statewide Colonial and Semi-colonial Waterbird Inventory with a Plan for Long-term Monitoring: Final Report. SDGFP Wildlife Division Report 2008-01A. RMBO Tech. Rep. M-ColonySD-04. Rocky Mountain Bird Observatory, Brighton, CO. 80 pp.
  • R1308 - Atlantic & Mississippi Flyways Double-crested Cormorant Management Plan. Prepared by the Cormorant Ad hoc Committees, Atlantic & Mississippi Flyway Council, Nongame Migratory Bird Technical Section. March 2010.
  • R1309 - Wires, L. R. and F. J. Cuthbert. 2006. Historic populations of the double-crested cormorant (Phalacrocorax auritus): Implications for conservation and management in the 21st century. Waterbirds 29:9-37.
  • R1310 - USDA/APHIS-Wildlife Services. 2010. SUPPLEMENT TO THE ENVIRONMENTAL ASSESSMENT: REDUCING BIRD DAMAGE THROUGH AN INTEGRATED WILDLIFE DAMAGE MANAGEMENT PROGRAM IN THE STATE OF VERMONT.
  • R1311 - Brad Allen in litt. 2012
  • R1312 - Susan Elbin in litt. 2012
  • R1313 - Patti Barber in litt. 2012
  • R1314 - Sandy Johnson in litt. 2012

Notes




Copyright Wetlands International 2012

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