Animalia > Chordata > Aves > Charadriiformes > Laridae > Larus > Larus heermanni

Larus heermanni (Heermann's Gull)

Synonyms: Blasipus heermanni
Language: Spanish

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) 
0
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
15
 Unique & Vulnerable (100)
ED Score: 1.83837
EDGE Score: 1.73638
Learn more at EDGE of Existence programme

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
Clutches / Year [5]  1
Fledging [5]  45 days
Global Population (2017 est.) [2]  350,000
Incubation [5]  28 days
Maximum Longevity [1]  24 years
Wing Span [6]  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)[6]

Range Map

External References

NatureServe Explorer

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
♦ 5Nathan 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
♦ 6del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 7Szoboszlai 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.
♦ 8Jorrit 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.
♦ 9CephBase - 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 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