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Larus heermanni (Heermann's Gull)

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Wikipedia Abstract

The Heermann's gull (Larus heermanni) is a gull resident in the United States, Mexico and extreme southwestern British Columbia, nearly all nesting on Isla Rasa in the Gulf of California. They are usually found near shores or well out to sea, very rarely inland. The species is named after Adolphus Lewis Heermann, nineteenth-century explorer and naturalist.
View Wikipedia Record: Larus heermanni

EDGE Analysis

Uniqueness Scale: Similiar (0) 
1
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
20
 Unique & Vulnerable (100)
ED Score: 1.83837
EDGE Score: 1.73638

Attributes

Adult Weight [1]  1.102 lbs (500 g)
Birth Weight [3]  58.6 grams
Breeding Habitat [2]  Beaches and estuaries
Wintering Geography [2]  Pacific Coast
Wintering Habitat [2]  Beaches and estuaries, Coastal marine
Diet [4]  Carnivore (Invertebrates), Carnivore (Vertebrates), Piscivore
Diet - Ectothermic [4]  30 %
Diet - Fish [4]  30 %
Diet - Invertibrates [4]  40 %
Forages - Ground [4]  20 %
Forages - Water Surface [4]  50 %
Forages - Underwater [4]  30 %
Clutch Size [3]  2
Global Population (2017 est.) [2]  350,000
Maximum Longevity [1]  24 years
Wing Span [5]  3.936 feet (1.2 m)

Ecoregions

Protected Areas

Ecosystems

Important Bird Areas

Name Location  IBA Criteria   Website   Climate   Land Use 
Channel Islands (Northern) USA A1, A4i, A4ii  
San Diego Bay USA A1, A4i
Santa Clara River Valley USA A1

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No
Mesoamerica Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama No

Prey / Diet

Prey / Diet Overlap

Predators

Larus livens (Yellow-footed Gull)[5]

Institutions (Zoos, etc.)

    Maps
Institution Infraspecies / Breed 
Oceanario de Lisboa
Project Wildlife

Range Map

Distribution

North America;

External References

Photos

Citations

Attributes / relations provided by
1de 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
2Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
3Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
4Hamish 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
5del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
6Szoboszlai 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.
7Jorrit 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.
8CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License