Animalia > Chordata > Aves > Charadriiformes > Laridae > Larus > Larus glaucescens

Larus glaucescens (Glaucous-winged Gull)

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Wikipedia Abstract

The glaucous-winged gull (Larus glaucescens) is a large, white-headed gull. The genus name is from Latin Larus which appears to have referred to a gull or other large seabird. The specific glaucescens is New Latin for "glaucous" from the Ancient Greek, glaukos. English "Glaucous" denotes a bluish-green or grey colour. The glaucous-winged gull nests in the summer, and each pair produces two or three chicks which fledge at six weeks.
View Wikipedia Record: Larus glaucescens

EDGE Analysis

Uniqueness Scale: Similiar (0) 
0
 Unique (100)
Uniqueness & Vulnerability Scale: Not determined do to incomplete vulnerability data.
ED Score: 1.03455
Learn more at EDGE of Existence programme

Attributes

Clutch Size [4]  3
Clutches / Year [7]  1
Egg Length [2]  2.795 inches (71 mm)
Egg Width [2]  1.929 inches (49 mm)
Fledging [2]  42 days
Global Population (2017 est.) [3]  380,000
Incubation [4]  27 days
Mating System [8]  Monogamy
Maximum Longevity [4]  32 years
Water Biome [1]  Coastal
Wing Span [7]  4.395 feet (1.34 m)
Adult Weight [2]  2.344 lbs (1.063 kg)
Birth Weight [4]  71 grams
Female Weight [6]  2.086 lbs (946 g)
Male Weight [6]  2.601 lbs (1.18 kg)
Weight Dimorphism [6]  24.7 %
Breeding Habitat [3]  Coastal cliffs and islands, Coastal marine
Wintering Geography [3]  Pacific Coast
Wintering Habitat [3]  Beaches and estuaries, Coastal marine
Diet [5]  Carnivore (Invertebrates), Carnivore (Vertebrates), Piscivore
Diet - Endothermic [5]  20 %
Diet - Fish [5]  30 %
Diet - Invertibrates [5]  30 %
Diet - Scavenger [5]  20 %
Forages - Ground [5]  30 %
Forages - Water Surface [5]  40 %
Forages - Underwater [5]  30 %
Female Maturity [2]  5 years 6 months
Male Maturity [2]  5 years 6 months

Ecoregions

Protected Areas

Ecosystems

Important Bird Areas

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No

Prey / Diet

Prey / Diet Overlap

Predators

Bubo scandiacus (Snowy Owl)[10]
Corvus corax (Northern Raven)[10]
Falco peregrinus (Peregrine Falcon)[10]
Haliaeetus leucocephalus (Bald Eagle)[10]
Homo sapiens (man)[10]

Consumers

Range Map

External References

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at animaldiversity.org
♦ 2Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 3Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
♦ 4de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 5Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
♦ 6Verbeek, NAM 1993. Glaucous-winged gull (Larus glaucescens). In The Birds of North America, No. 59 (A. Poole and F. Gill, Eds.). Academy of Natural Sciences, Philadelphia, and American Ornithologists' Union, Washington DC
♦ 7del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 8Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
♦ 9Wootton, J. Timothy. "Estimates and tests of per capita interaction strength: diet, abundance, and impact of intertidally foraging birds." Ecological Monographs 67.1 (1997): 45+. Academic OneFile. Web. 23 July 2010
♦ 10Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 11CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
♦ 12Szoboszlai AI, Thayer JA, Wood SA, Sydeman WJ, Koehn LE (2015) Forage species in predator diets: synthesis of data from the California Current. Ecological Informatics 29(1): 45-56. Szoboszlai AI, Thayer JA, Wood SA, Sydeman WJ, Koehn LE (2015) Data from: Forage species in predator diets: synthesis of data from the California Current. Dryad Digital Repository.
♦ 13Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979
♦ 14Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0