Population information

Order name Charadriiformes
Family name Laridae
Scientific name Larus heermanni Common name Heermann's Gull
Population name Pacific N & C America
Breeding range Coast of California & Pacific NW Mexico Non-breeding range Pacific Coast SW Canada to Guatemala
Red List Category Near Threatened
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 0 525,000 525,000 [R387]
WPE 4 0 0 525,000 525,000 [R387]
WPE 1 0 0 1,500,000 1,500,000 [R296]
WPE 2 0 0 1,500,000 1,500,000 [R296]
WPE 5 0 0 525,000 525,000 [R387]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1990 2000 FLU [R68]
WPE 4 1995 2005 FLU [R64]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1995 2005 FLU [R64]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 5300
WPE 4 2006 5300
WPE 1 1994 15000
WPE 2 1997 15000
WPE 5 2012 5300

References

  • 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.
  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R64 - BirdLife International. 2005. Threatened birds of the world 2005. Species factsheets available at?www.birdlife.org
  • R296 - Harrison, P. 1983. Seabirds: an identification guide to seabirds of the world. Croom-Helm, Beckenham, UK.

Notes




Copyright Wetlands International 2012

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