Population information

Order name Charadriiformes
Family name Laridae
Scientific name Larus occidentalis Common name Western Gull
Population name wymani
Breeding range Coast C California to C Baja California Non-breeding range Coast British Colombia to Baja California
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 50,900 50,900 [R165]
WPE 2 0 0 50,900 50,900 [R165]
WPE 3 0 0 84,000 84,000 [R525]
WPE 4 0 0 84,000 84,000 [R525]
WPE 5 0 0 84,000 84,000 [R525]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1965 1980 INC [R165]
WPE 2 1965 1980 INC [R165]
WPE 3 1965 1980 INC [R165]
WPE 4 1965 1980 INC [R165]
WPE 5 1965 1980 INC [R165]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 510
WPE 2 1997 510
WPE 3 2002 840
WPE 4 2006 840
WPE 5 2012 840

References

  • R165 - Croxall, J.P., Evans, P.G.H. and Schreiber, R.W. (eds.). 1984. Status and Conservation of the World's Seabirds. ICBP Technical Publication No. 2. Cambridge, UK.
  • R525 - Pierotti, R.J. and Annett, C.A. 1995. Western Gull (Larus occidentalis). In: The birds of North America, No 174. (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, PA and The American Ornithologists' Union, Washington D.C.

Notes




Copyright Wetlands International 2012

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