Family Gulls, Terns, Skimmers (Laridae)

Least Concern

California Gull (Larus californicus)


Taxonomy

French: Goéland de Californie German: Kaliforniermöwe Spanish: Gaviota californiana
Taxonomy:

Larus Californicus

Lawrence

, 1854,

Stockton, California, USA

.

Races, formerly disjunct, have recently come together in N plains, where a zone of secondary contact is being created; genetic studies reveal little divergence between them. Two subspecies currently recognized.

Subspecies and Distribution
  • L. c. albertaensis Jehl, 1987 – WC Canada from S Mackenzie (Great Slake L), Alberta and W Manitoba S to N USA (South Dakota).
  • L. c. californicus Lawrence, 1854 – W USA from E Washington and Great Basin to C Montana and Wyoming, and S to E California.
  • Winters mainly from SW Canada to SW Mexico.

    Descriptive notes

    51–58 cm; californicus 432–885 g, albertaensis 568–1045 g; wingspan 122–140 cm. A four-year gull. Resembles the Ring-billed Gull... read more

    Voice

    The long call is higher-pitched and harsher than in the Arctic Herring Gull L. smithsonianus... read more

    Habitat

    Breeds in open habitats in the arid interior, usually on low rocky islands in both freshwater and... read more

    Food and feeding

    Birds inland, including during the breeding season, take a broad diversity of food items including insects and grubs (especially Orthoptera... read more

    Breeding

    Returns to colonies in early March; lays late April to May; hatching is mostly from early June (mid-May). Mated pairs tend to be of same... read more

    Movements

    Winters mostly along the Pacific coast from British Columbia to southern Baja California... read more

    Status and conservation

    Not globally threatened (Least Concern). The global population, following population growth and range expansion during much of the 20th century, was estimated in 2011 at 621,... read more

    Recommended citation

    Burger, J., Gochfeld, M., Kirwan, G.M. & Garcia, E.F.J. (2017). California Gull (Larus californicus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/53973 on 19 September 2017).