Data Zone
Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: http://www.aerc.eu/DOCS/Bird_taxa_of_the_WP15.xls.
Cramp, S. and Simmons, K.E.L. (eds). 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2018 | Least Concern | |
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | full migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 8,890,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 18,400,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2006 |
| Population trend | increasing | - | estimated | - |
| Generation length | 10.9 years | - | - | - |
Population justification: Wetlands International (2018) estimate the population size at 2,550,000 individuals.
Trend justification: This species has undergone a small or statistically insignificant increase over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Anguilla (to UK) | extant | native | ||||
| Antigua and Barbuda | extant | native | ||||
| Aruba (to Netherlands) | extant | native | ||||
| Austria | extant | vagrant | ||||
| Bahamas | extant | native | ||||
| Barbados | extant | native | ||||
| Belgium | extant | vagrant | ||||
| Belize | extant | native | yes | |||
| Bermuda (to UK) | extant | native | ||||
| Brazil | extant | native | ||||
| Bulgaria | extant | vagrant | ||||
| Canada | extant | native | yes | yes | ||
| Cayman Islands (to UK) | extant | native | ||||
| Colombia | extant | native | ||||
| Costa Rica | extant | native | yes | |||
| Cuba | extant | native | ||||
| Denmark | extant | vagrant | ||||
| Dominica | extant | native | ||||
| Dominican Republic | extant | native | ||||
| Ecuador | extant | native | ||||
| El Salvador | extant | native | ||||
| Faroe Islands (to Denmark) | extant | vagrant | ||||
| France | extant | vagrant | ||||
| Germany | extant | vagrant | ||||
| Gibraltar (to UK) | extant | vagrant | ||||
| Greenland (to Denmark) | extant | vagrant | ||||
| Guadeloupe (to France) | extant | native | ||||
| Guatemala | extant | native | ||||
| Haiti | extant | native | ||||
| Honduras | extant | native | ||||
| Hungary | extant | vagrant | ||||
| Iceland | extant | vagrant | ||||
| Ireland | extant | vagrant | ||||
| Jamaica | extant | vagrant | ||||
| Kiribati | extant | vagrant | ||||
| Martinique (to France) | extant | native | ||||
| Mexico | extant | native | ||||
| Montserrat (to UK) | extant | native | ||||
| Morocco | extant | vagrant | ||||
| Netherlands | extant | vagrant | ||||
| Norway | extant | vagrant | ||||
| Panama | extant | native | ||||
| Poland | extant | vagrant | ||||
| Portugal | extant | vagrant | ||||
| Puerto Rico (to USA) | extant | native | ||||
| Senegal | extant | vagrant | ||||
| Sint Maarten (to Netherlands) | extant | uncertain | ||||
| South Africa | extant | vagrant | yes | |||
| Spain | extant | vagrant | ||||
| St Barthelemy (to France) | extant | native | ||||
| St Kitts and Nevis | extant | native | ||||
| St Lucia | extant | native | ||||
| St Martin (to France) | extant | uncertain | ||||
| St Pierre and Miquelon (to France) | extant | native | yes | yes | ||
| St Vincent and the Grenadines | extant | native | ||||
| Svalbard and Jan Mayen Islands (to Norway) | extant | vagrant | ||||
| Sweden | extant | vagrant | ||||
| Switzerland | extant | vagrant | ||||
| Trinidad and Tobago | extant | native | ||||
| Turks and Caicos Islands (to UK) | extant | native | ||||
| United Kingdom | extant | vagrant | ||||
| USA | extant | native | yes | |||
| Venezuela | extant | native | ||||
| Virgin Islands (to UK) | extant | native | yes | |||
| Virgin Islands (to USA) | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Canada | Île de la Couvée |
| Canada | Île Deslauriers |
| Canada | Kaweenakumik Lake |
| Canada | Leslie Street Spit |
| Canada | Limestone Islands |
| Canada | Lower Detroit River |
| Canada | Miquelon Lake |
| Canada | Niagara River Corridor |
| Canada | Pittock Reservoir |
| Canada | Port Colborne (breakwater and mainland) |
| Canada | Presqu'ile Provincial Park |
| Canada | Réserve nationale de faune des Îles-de-Contrecoeur |
| Canada | Riverton Sandy Bar |
| Canada | Wildwood Gull Roost |
| USA | Saginaw Bay |
| USA | Salton Sea |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Water Storage Areas (over 8ha) | suitable | non-breeding |
| Grassland | Temperate | suitable | breeding |
| Marine Coastal/Supratidal | Coastal Freshwater Lakes | suitable | non-breeding |
| Marine Neritic | Estuaries | suitable | non-breeding |
| Marine Neritic | Macroalgal/Kelp | suitable | non-breeding |
| Marine Neritic | Pelagic | suitable | non-breeding |
| Marine Neritic | Seagrass (Submerged) | suitable | non-breeding |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | suitable | non-breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | suitable | non-breeding |
| Marine Neritic | Subtidal Sandy | suitable | non-breeding |
| Marine Neritic | Subtidal Sandy-Mud | suitable | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | suitable | breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | breeding |
| Altitude | 0 - 100 m | Occasional altitudinal limits |
| Purpose | Scale |
|---|---|
| Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Ring-billed Gull Larus delawarensis. Downloaded from
https://datazone.birdlife.org/species/factsheet/ring-billed-gull-larus-delawarensis on 18/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 18/12/2024.