Population information

Order name Charadriiformes
Family name Laridae
Scientific name Larus californicus Common name California Gull
Population name W North America (bre)
Breeding range WC Canada, NW USA Non-breeding range SW Canada to SW Mexico
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 -1 -1
WPE 3 0 0 621,000 621,000 [R387]
WPE 4 0 0 621,000 621,000 [R387]
WPE 1 0 0 -1 -1
WPE 5 2001 2011 621,000 621,000 Expert opinion [S7203] [R1274]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1966 1996 DEC [R565]
WPE 3 1966 2000 STA [R563]
WPE 4 1966 2000 STA [R563]
WPE 1 0 0 Unknown
WPE 5 1966 2000 STA [R563]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 0 -1
WPE 3 2002 6200
WPE 4 2006 6200
WPE 1 0 -1
WPE 5 2012 6200

References

  • 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.
  • R387 - Kushlan, James, A., Melanie J. Steinkamp, Katharine Parsons, Jack Capp, Martin Acosta Cruz, Malcolm Coulter, Ian Davidson, Loney Dickson, Naomi Edelson, Richard Elliot, R. Michael Erwin, Scott Hatch, Stephen Kress, Robert Milko, Steve Miller, Kyra Mills, Richard Paul, Roberto Phillips, Jorge E. Saliva, Bill Sydeman, John Trapp, Jennifer Wheeler, and Kent Wohl. 2002. North American Waterbird Conservation Plan, Version 1. Waterbird Conservation for the Americas, Washington, DC, USA.
  • 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.
  • R1274 - Environment Canada. 2012. Status of Birds in Canada 2011: http://www.ec.gc.ca/soc-sbc/index-eng.aspx?sY=2010andsL=e)

Notes

  • S7203 - 300,000-450,000 in Canada (Environment Canada 2012). Start yr based on Kushlan et al. 2002; end year based on Environment Canada estimate.



Copyright Wetlands International 2012

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