Heermann's Gull

About the Heermann's Gull

The Heermann's Gull is a gull that lives on the west coast of the United States and Mexico. It has a population of about 150,000 pairs, and 90% of these nest on the island of Isla Rasa off Baja California.

Heermann's Gulls eat a variety of food items. They are also known to steal food from other birds; Brown Pelicans are frequent victims.

The conservation status of the Heermann's Gull is Near Threatened (as of November 2014), but the good news is that the population trend is increasing. Weather patterns like El Niño strongly influence breeding success of this species.

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Details & Statistics

Added to Birdorable
Hatched on 07 January 2010
Scientific Name
Larus heermanni
  • Charadriiformes
  • Laridae
  • Larus
  • L. heermanni
Birdorable Family
Conservation Status
Near Threatened (as of 20 March 2020)
  • Least Concern (LC)
  • Near Threatened (NT)
  • Vulnerable (VU)
  • Endangered (EN)
  • Critically Endangered (CR)
  • Extinct in the Wild (EW)
  • Extinct (EX)
Source: IUCN Red List
Units: Imperial / Metric
18 to 21 inches
40 to 45 inches
13 to 23 ounces


From IUCN Red List:
The Heermann's Gull is listed as Near Threatened on the IUCN Red List and was last assessed in 2012 by BirdLife International. This species is considered Near Threatened as it has a highly restricted breeding range, with 90% of the world population breeding on a single small island. Populations fluctuate widely in response to climatic events, although these fluctuations are less than one order of magnitude. It is likely to be at high risk from catastrophic events or local anthropogenic changes, and should be carefully monitored.

International Names

Chinese (汉语) 红嘴灰鸥
Czech (Cesky) Racek Mexický
Danish (Dansk) Askemåge
Dutch (Nederlands) Heermann-meeuw
Finnish (Suomi) Meksikonlokki
French (Français) Goéland de Heermann
German (Deutsch) Heermannmöwe
Italian (Italiano) Gabbiano di Heermann
Japanese (日本語) オグロカモメ (Ogurokamome)
Norwegian (Norsk) Askemåke
Polish (Polski) Mewa Sniada
Russian (русский язык) Чайка Хеерманна
Spanish (Español) Gaviota Mexicana
Swedish (Svenska) Vithuvad Mås
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