LC
Slender-billed Gull Larus genei



Taxonomy

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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2019 Least Concern
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
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass 281 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 22,600,000 medium
Extent of Occurrence non-breeding (km2) 27,500,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 180000-230000 poor estimated 2012
Population trend Unknown not applicable -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 10.5 - - -

Population justification: The global population has been estimated at 310,000-380,000 individuals (Wetlands International 2015). The European population is estimated at 35,900-57,300 pairs, which equates to 71,700-115,000 mature individuals or 107,550-172,500 individuals (BirdLife International 2015). An updated global population estimate using this new information from Europe provides an estimate of 280,000-345,000 individuals. This roughly equates to 180,000-230,000 mature individuals.

Trend justification: The overall population trend is not known. Some populations may be stable or increasing (Wetlands International 2015), whilst the European population is estimated to be decreasing by less than 25% in three generations (BirdLife International 2015).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Afghanistan N Extant Yes
Albania N Extant Yes
Algeria N Extant
Antigua and Barbuda V Extant
Austria N Extant Yes
Azerbaijan N Extant Yes
Bahrain N Extant Yes Yes
Belarus V Extant
Bosnia and Herzegovina N Extant Yes
Bulgaria N Extant Yes Yes
China (mainland) U Extant Yes
Côte d'Ivoire V Extant
Croatia U Extant
Cyprus N Extant Yes Yes
Djibouti V Extant
Egypt N Extant Yes
Eritrea N Extant
Ethiopia N Extant
France N Extant Yes Yes
Gambia N Extant
Georgia N Extant Yes
Germany V Extant
Gibraltar (to UK) V Extant
Greece N Extant Yes Yes
Guinea N Extant
Guinea-Bissau N Extant Yes
Hong Kong (China) V Extant
India N Extant
Iran, Islamic Republic of N Extant Yes Yes
Iraq N Extant Yes
Israel N Extant
Italy N Extant Yes Yes
Japan V Extant
Jordan N Extant Yes Yes
Kazakhstan N Extant Yes
Kenya V Extant
Kuwait N Extant Yes Yes
Lebanon N Extant Yes Yes
Libya N Extant
Malta N Extant
Mauritania N Extant Yes
Montenegro V Extant Yes
Morocco N Extant
Nepal V Extant
Nigeria V Extant
North Macedonia N Extant Yes
Oman N Extant Yes Yes
Pakistan N Extant
Palestinian Authority Territories N Extant Yes Yes
Poland V Extant
Portugal V Extant
Qatar N Extant Yes
Romania N Extant Yes
Russia N Extant Yes Yes Yes
Russia (Central Asian) N Extant Yes
Russia (European) N Extant Yes Yes
Saudi Arabia N Extant Yes Yes
Senegal N Extant Yes
Serbia V Extant Yes
Slovenia V Extant
Somalia U Extant
South Africa V Extant
Spain N Extant Yes
Sri Lanka V Extant
Sudan N Extant Yes
Switzerland V Extant
Syria N Extant Yes Yes
Thailand V Extant
Tunisia N Extant Yes
Turkey N Extant Yes
Turkmenistan N Extant Yes
Ukraine N Extant Yes
United Arab Emirates N Extant Yes Yes
United Kingdom V Extant
Uzbekistan N Extant
Western Sahara N Extant Yes
Yemen N Extant Yes Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Cyprus Larnaca Salt Lakes
Azerbaijan Pirsagat Islands and Los Island
Cyprus Akrotiri salt-lake including Bishop's Pool
Bulgaria Atanasovsko Lake
Turkey Büyük Menderes Delta
Turkey Bolluk Lake
Greece Mesolongi and Aitoliko lagoons, Acheloos delta and Evinos estuary
Greece Amvrakikos gulf
Greece Kalamas delta
Greece Alyki Kitrous lagoon
Greece Axios, Loudias and Aliakmonas rivers' deltas
Greece Alyki Angelochoriou lagoon (Megalou Emvolou)
Greece Alyki lagoon, Aigio
Greece Divari Pylou (Gialova) lagoon and Sfaktiria island
Greece Evros delta
Greece Kalloni Gulf, Lesvos
Greece Lake Ismarida (Mitrikou)
Greece Agios Mamas marsh
Greece Porto Lagos, lake Vistonida and coastal lagoons
Greece Nestos delta and coastal lagoons
Greece Kotychi lagoon
Greece Lagoons of Kerkyra island
Greece Lakes Volvi, Koroneia and Rentina Gorge
Greece Spercheios valley and delta and Maliakos gulf
Russia (European) Delta of the River Don
Russia (European) Beglitskaya sand-spit
Russia (European) Islands in the western part of Lake Manych-Gudilo
Russia (European) Khanskoye Lake
Russia (European) Lake Manych-Gudilo
Spain Guadalquivir marshes
Spain Ebro delta
Spain Fuente de Piedra, Gosque and Campillos lakes
Ukraine Syvash Bay
Ukraine Kazantip Cape, Aktash lake and Astanins'ka marsh
Ukraine Karkinits'ka and Dzharylgats'ka bays
Ukraine Yagorlyts'ka and Tendrivs'ka Bays
Ukraine Bagerove
Ukraine Kinburns'kyj peninsula
France Camargue
France Etangs de Leucate et Lapalme
France Petite Camargue laguno-marine
France Etangs Narbonnais
France Etangs Montpellierains
France Etangs de Vendres, Pissevache et Lespignan
France Salins d'Hyères et de Pesquiers
France Basse vallée du Var
Italy Pantani di Vendicari e di Capo Passero
Italy Po Delta
Italy Punte Alberete and Valle della Canna, Pineta San Vitale and Pialassa della Baiona
Italy Marchesato and River Neto
Italy Oristano wetlands
Italy Cagliari wetlands
Italy Manfredonia Gulf wetlands
Italy Simeto mouth and middle course and Biviere di Lentini
Italy Colostrai pool
Italy Palmas Gulf wetlands
Italy Stagnone di Marsala and Trapani saltpans
Albania Karavasta Lagoon
Turkey Tersakan Lake
Egypt Zaranik Protected Area
Egypt El Malaha
Egypt Bitter Lakes
Egypt Lake Manzala
Egypt Lake Qarun Protected Area
Gambia Niumi National Park
Gambia Tanbi wetland complex
Gambia Tanji River (Karinti) Bird Reserve
Gambia Bao Bolon Wetland Reserve
Guinea-Bissau Arquipélago dos Bijagós
Kenya Tana River Delta
Mauritania Cap Blanc
Mauritania Banc d'Arguin National Park
Mauritania Aftout es Sâheli
Mauritania Chott Boul
Mauritania Diawling National Park
Senegal Djoudj wetlands
Senegal Guembeul Avifaunal Reserve and St Louis lagoons
Senegal Parc National de la Langue de Barbarie
Senegal Niayes (from Dakar to St Louis)
Senegal La Petite Côte
Senegal Joal-Fadiouth
Senegal Delta du Saloum
Tunisia Lagune de Soliman
Tunisia Salines de Thyna
Tunisia Îles Kneiss
Tunisia Golfe de Boughrara
Italy Gargano Promontory and Capitanata Wetlands
Italy Sinis and Oristano wetlands
Bahrain Tubli Bay
Iran, Islamic Republic of Bahu Kalat (Gandu) Protected Area
Iran, Islamic Republic of Miankaleh Peninsula and Gorgan Bay
Iran, Islamic Republic of Shadegan marshes and tidal mudflats of Khor-al Amaya and Khor Musa
Iran, Islamic Republic of Lake Uromiyeh
Iran, Islamic Republic of Lake Bakhtegan, Lake Tashk and Kamjan marshes
Kuwait Sulaibikhat Bay
Oman Ras al Hadd
Oman Barr al Hikman
Oman Masirah island
Oman Duqm
Oman Khawr Ghawi
Oman Al Batinah coast
Saudi Arabia Tarut Bay
Saudi Arabia Jiddah south corniche and port
Russia (European) Kiziltash limans
Syria Sabkhat al-Jabboul
Bulgaria Kaliakra
Bulgaria Galata
France Baie de Bourgneuf et marais breton
France Etang du Bagnas
France Salines de l'Etang de Berre
France Marais salants de Noirmoutier
Russia (European) Yeiski salt-lakes
Afghanistan Ab-i-Istada
Iran, Islamic Republic of Shur Gol, Yadegarlu and Dorgeh Sangi lakes
Iran, Islamic Republic of Lake Kobi
Iran, Islamic Republic of South Caspian shore, from Astara to Gomishan
Iran, Islamic Republic of Bandar Kiashar lagoon and mouth of Sefid Rud
Iran, Islamic Republic of Gomishan marshes and Turkoman steppes
Iran, Islamic Republic of Lake Alagol, Lake Ulmagol and Lake Ajigol
Iran, Islamic Republic of Lashgarak and Latian dam
Iran, Islamic Republic of Arjan Protected Area
Iran, Islamic Republic of Lake Maharlu
Iran, Islamic Republic of Hamoun-i Sabari and Hamoun-i Hirmand
Iran, Islamic Republic of South end of the Hamoun-i Puzak
Iran, Islamic Republic of Khouran Straits
Iran, Islamic Republic of Khor Jask
Iran, Islamic Republic of Chahbahar Bay and Khor Konarak
Kuwait Dawhat Kazima
Kuwait Ad-Doha Nature Reserve
Oman Musandam islands
Oman Ra's as Sawadi - Juzor as Sawadi
Oman Quriyat - Daghmar
Saudi Arabia Abu Ali
Saudi Arabia Sabkhat al-Fasl lagoons
Saudi Arabia Gulf of Salwah
Saudi Arabia Al-Ha'ir
Saudi Arabia Madinat Yanbu al-Sinaiyah
Saudi Arabia Jizan Bay
Saudi Arabia Farasan Islands
United Arab Emirates Khor Al Jazirah
United Arab Emirates Ramtha lagoons
United Arab Emirates Ras Al Khor Wildlife Sanctuary (Khor Dubai)
Uzbekistan Kagan Fish Farm
Turkmenistan Garabogaz - Garshy
Turkmenistan Turkmen Bay
Kazakhstan Lesser Aral Sea
Kazakhstan Lower reaches of the Emba River
Russia (European) Taman'
Bahrain Hawar Islands
Russia (European) Kozinka lake and Baranikovski segment of Manych
Turkey Kulu Lake
Italy Valli di Comacchio and Bonifica del Mezzano
Cyprus Akrotiri Peninsula - Episkopi Cliffs
Romania Danube Delta
Romania Limanu - Herghelia
Romania Black Sea
Romania Lake Siutghiol
Kazakhstan Korgalzhyn State Nature Reserve
Spain Albufera de Valencia marshes
Spain Santa Pola salt-pans
Spain Mata and Torrevieja lagoons
Spain Wetlands of western Almería
Spain Bahía de Almería
Spain Tabarca - Cabo de Palos
Spain Plataforma Marina del Delta del Ebro - Columbretes
Egypt El Malaha / Lake Manzala - Marine
Senegal Delta du Saloum - Marine
Guinea-Bissau Île Alcatraz et Île du Naufrage - Marine
Mauritania Banc d'Arguin National Park - Marine
Senegal Parc National de la Langue de Barbarie - marine
Tunisia Salines de Thyna - Marine
Kazakhstan Caspian Sea shore between Volga and Ural River Deltas
Russia (European) Utrish Reserve and adjacent coastal waters
Iraq Razzaza Lake
Iraq East Hammar
Iraq West Hammar
Iraq Sinnaf Seasonal Wetlands
Iraq Darbandikhan Lake
Iraq Dukan Lake
Tunisia Îles Kerkennah
Italy Punta Alberete, Canna Valley, San Vitale Pinewood, and Pialassa of Baiona
Uzbekistan Tudakul and Kuymazar Reservoirs
Senegal Delta du Saloum - marine
Gambia Delta du Saloum – Niumi – Tanbi
Guinea-Bissau Arquipélago dos Bijagós - marine
United Arab Emirates Ba Al Ghaylam
United Arab Emirates Marawah Island
Russia (European) Mouth of Yeya river
Kazakhstan Syrdarya Delta Lakes
Kazakhstan Karagie Depression
Kazakhstan Tyulen’i (Seal) Islands
Kazakhstan Delta of the Ural River
Kazakhstan Kazakhstan portion of the river Volga's Delta - Zhambay
Tunisia Côtes de l'Île de Djerba
Guinea-Bissau Rio Mansôa and Gêba estuary
Guinea-Bissau Cantanhez forests
Senegal Kalissaye Avifaunal Reserve

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Artificial/Aquatic - Salt Exploitation Sites suitable non-breeding
Grassland Temperate suitable breeding
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable breeding
Marine Coastal/Supratidal Coastal Freshwater Lakes suitable breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands suitable breeding
Marine Intertidal Rocky Shoreline suitable breeding
Marine Intertidal Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc suitable breeding
Marine Intertidal Shingle and/or Pebble Shoreline and/or Beaches suitable breeding
Marine Intertidal Tidepools suitable breeding
Marine Neritic Estuaries suitable breeding
Marine Neritic Macroalgal/Kelp major non-breeding
Marine Neritic Seagrass (Submerged) major non-breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel major non-breeding
Marine Neritic Subtidal Rock and Rocky Reefs major non-breeding
Marine Neritic Subtidal Sandy major non-breeding
Marine Neritic Subtidal Sandy-Mud major non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Lakes suitable breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Marshes/Pools suitable breeding
Altitude   Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Pollution Industrial & military effluents - Oil spills Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Reduced reproductive success

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Sport hunting/specimen collecting - - Non-trivial Recent

Recommended citation
BirdLife International (2021) Species factsheet: Larus genei. Downloaded from http://www.birdlife.org on 08/03/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 08/03/2021.