LC
Ruff Calidris pugnax



Taxonomy

Taxonomic note
Calidris pugnax (del Hoyo and Collar 2014) was previously placed in the genus Philomachus.

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.
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.
Christidis, L. and Boles, W.E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.
Christidis, L.; Boles, W. E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.
Cramp, S. and Perrins, C.M. 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
Cramp, S.; Perrins, C. M. 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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
SACC. 2006. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
SACC. 2006. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
Turbott, E. G. 1990. Checklist of the birds of New Zealand. Ornithological Society of New Zealand, Wellington.
Turbott, E.G. 1990. Checklist of the birds of New Zealand. Ornithological Society of New Zealand, Wellington.

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

Red List history
Year Category Criteria
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 -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 38,500,000 km2 medium
Extent of Occurrence (non-breeding) 161,000,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown poor estimated 2012
Population trend decreasing - suspected -
Generation length 5.3 years - - -

Population justification: The European population is estimated at 265,000-1,650,000 calling or lekking males, which equates to 531,000-3,310,000 mature individuals or 797,000-4,970,000 individuals (BirdLife International 2015). Europe forms approximately 50% of the global range so a very preliminary estimate of the global population size is 1,594,000-9,940,000 individuals. The global population was previously estimated to number 2,000,000-2,600,000 individuals (Wetlands International 2006). The upper estimate of the European population size is considerably larger than the Wetlands International (2006) global estimate. The extrapolated European population size is therefore used here and the population placed in the band 1,500,000-9,999,999 individuals.

Trend justification: The overall population trend is decreasing, although some populations have unknown trends (Wetlands International 2015). There is evidence to suggest that the European population (265,000-1,650,000 calling or lekking males, occupying c. 50% of the global breeding range) has declined by less than 25% in 15.9 years (three generations). This may reflect shifts in breeding populations, populations in Asia are not thought to be declining and wintering populations in Africa appear to be increasing.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Afghanistan extant native yes
Albania extant native
Algeria extant native
Angola extant native
Anguilla (to UK) extant vagrant
Antigua and Barbuda extant vagrant
Armenia extant native
Australia extant vagrant
Austria extant native yes
Azerbaijan extant native yes
Bahrain extant native yes yes
Bangladesh extant native
Barbados extant vagrant
Belarus extant native yes yes
Belgium extant native yes yes
Benin extant native
Bermuda (to UK) extant vagrant
Bosnia and Herzegovina extant native
Botswana extant native
Brazil extant vagrant
Brunei extant native
Bulgaria extant native yes
Burkina Faso extant native
Burundi extant native
Cambodia extant native
Cameroon extant native
Canada extant vagrant
Cape Verde extant native
Cayman Islands (to UK) extant vagrant
Central African Republic extant native
Chad extant native
China (mainland) extant native
Colombia extant vagrant
Comoros extant vagrant
Congo extant native
Congo, The Democratic Republic of the extant native
Costa Rica extant vagrant
Côte d'Ivoire extant native
Croatia extant native yes yes
Cyprus extant native yes yes
Czechia extant native yes yes
Denmark extant native yes yes
Djibouti extant native
Dominica extant vagrant
Egypt extant native
Eritrea extant native
Estonia extant native yes yes
Eswatini extant native
Ethiopia extant native
Faroe Islands (to Denmark) extant vagrant
Finland extant native yes yes
France extant native yes yes
Gabon extant native
Gambia extant native
Georgia extant native
Germany extant native yes yes
Ghana extant native
Greece extant native yes yes
Greenland (to Denmark) extant vagrant
Grenada extant vagrant
Guadeloupe (to France) extant vagrant yes
Guam (to USA) extant native yes
Guatemala extant vagrant
Guinea extant native
Guinea-Bissau extant native
Hong Kong (China) extant native
Hungary extant native yes yes
Iceland extant vagrant
India extant native
Indonesia extant native
Iran, Islamic Republic of extant native yes yes
Iraq extant native yes
Ireland extant native yes
Israel extant native
Italy extant native yes yes
Jamaica extant vagrant
Japan extant vagrant
Jordan extant native yes yes
Kazakhstan extant native yes
Kenya extant native
Kuwait extant native yes yes
Kyrgyzstan extant native yes
Laos extant vagrant
Latvia extant native yes yes
Lebanon extant native yes yes
Lesotho extant native
Liberia extant native
Libya extant native
Liechtenstein extant vagrant
Lithuania extant native yes
Luxembourg extant native
Madagascar extant vagrant
Malawi extant native
Malaysia extant native
Maldives extant vagrant
Mali extant native
Malta extant native
Marshall Islands extant native yes
Martinique (to France) extant vagrant
Mauritania extant native
Mauritius extant vagrant
Mexico extant vagrant
Micronesia, Federated States of extant native yes
Moldova extant native yes
Monaco extant native
Mongolia extant native
Montenegro extant native yes yes
Montserrat (to UK) extant vagrant
Morocco extant native
Mozambique extant native
Myanmar extant native
Namibia extant native
Nepal extant native
Netherlands extant native yes
New Zealand extant vagrant
Niger extant native
Nigeria extant native
North Korea extant vagrant
North Macedonia extant native yes
Northern Mariana Islands (to USA) extant native yes
Norway extant native yes yes
Oman extant native yes yes
Pakistan extant native
Palau extant native yes
Palestine extant native yes
Panama extant vagrant
Papua New Guinea extant native
Peru extant vagrant
Philippines extant native
Poland extant native yes yes
Portugal extant native yes
Puerto Rico (to USA) extant vagrant
Qatar extant native yes yes
Romania extant native yes yes
Russia extant native yes yes yes
Russia (Asian) extant native yes
Russia (Central Asian) extant native yes yes
Russia (European) extant native yes yes
Rwanda extant native
Saudi Arabia extant native yes yes
Senegal extant native
Serbia extant native yes yes
Seychelles extant vagrant
Sierra Leone extant native
Singapore extant native
Slovakia extant native
Slovenia extant native yes yes
Solomon Islands extant vagrant
Somalia extant native
South Africa extant native
South Korea extant native
South Sudan extant native yes
Spain extant native yes yes
Sri Lanka extant native
St Kitts and Nevis extant vagrant
St Lucia extant vagrant
St Vincent and the Grenadines extant vagrant
Sudan extant native
Svalbard and Jan Mayen Islands (to Norway) extant vagrant
Sweden extant native yes yes
Switzerland extant native yes
Syria extant native yes yes
Taiwan, China extant native
Tajikistan extant native
Tanzania extant native
Thailand extant native
Timor-Leste extant native yes yes
Togo extant native
Trinidad and Tobago extant vagrant
Tunisia extant native
Türkiye extant native yes
Turkmenistan extant native
Uganda extant native
Ukraine extant native yes yes
United Arab Emirates extant native yes yes
United Kingdom extant native yes yes
United States Minor Outlying Islands (to USA) extant vagrant
USA extant vagrant yes
Uzbekistan extant native
Venezuela extant vagrant
Vietnam extant native
Virgin Islands (to UK) extant vagrant
Virgin Islands (to USA) extant vagrant
Yemen extant native yes yes
Zambia extant native
Zimbabwe extant native

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Cameroon Logone flood-plain
Chad Lake Chad
Estonia Alam-Pedja
Estonia Lahemaa
Estonia Muraka
Estonia Nätsi-Võlla
Ethiopia Abijatta - Shalla Lakes National Park
Finland Kemihaara (Vuotos) mires and forests
Finland Lemmenjoki-Hammastunturi-Pulju
Finland Martimoaapa-Lumiaapa-Penikat
Finland Oulu region wetlands
Finland Pomokaira-Koitelaiskaira
Finland Saariselkä and Koilliskaira
France Plaine du Forez
Germany Aland-Elbe lowlands
Germany Altmühl valley between Treuchtlingen and Leutershausen with Altmühlsee
Germany Blockland - lower Wümme valley - Westliches Hollerland
Germany Coast and lagoons of Western Pomerania
Germany Danube valley: Neu-Ulm - Lauingen incl. Faiminger Stausee, Donau-Moos, and Gundelfinger Moos
Germany Donauried
Germany Drömling (Sachsen-Anhalt)
Germany Elbe marshes between Stade and Otterndorf
Germany Elzniederung between Kenzingen and Rust
Germany Emsaue (Rietberger Emsniederung - Steinhorster Becken)
Germany Federseeried
Germany Greifswalder Bodden
Germany Hellwegbörde
Germany Hessian Rhine alluvion
Germany Isar valley: Gottfrieding - Plattling incl. Isar mouth
Germany Jadebusen, inland
Germany Krummhörn-Westermarsch
Germany Leine valley near Salzderhelden
Germany Lower Havel - Lake Schollene - Lake Gülpe
Germany Lower Inn: Haiming - Neuhaus including the Neuhaus, Egglfing, Ering, and Simbach reservoirs
Germany Lower Oder valley
Germany Lower reaches of River Weser, unembanked area
Germany Lower Rhine
Germany Lower Saxony Wadden Sea National Park
Germany Lowlands of the Rivers Eider, Treene and Sorge
Germany Mittelwesermarsch
Germany Niedervieland, Ochtumniederung
Germany Nuthe - Nieplitz lowlands
Germany Oberes Rhinluch / Havelländisches Luch Nauen-Friesack
Germany Ponds and Elbe valley near Torgau
Germany Rieselfelder Münster
Germany Rietzer See
Germany Salziger See and Salza valley
Germany Schleswig-Holstein Wadden Sea National Park (includes the Halligs, Kniepsand/Amrum, Lister Koog, Rantumbecken, Rickelsb
Germany Schwalmaue around Schwalmstadt
Germany Spreewald
Germany Unteres Rhinluch-Dreetzer See / Havelländisches Luch / Belziger Landschaftswiesen
Germany Untersee of Lake Constance
Germany Vogelfreistätte Mittlere Isar-Stauseen
Germany Wagbach lowlands
Germany Werderland
Germany Wümme lowlands Borgfeld-Fischerhude
Hungary Hortobágy and Tisza-to
India Bardha Dam
India Kaj Lake (Pipalava Bandharo)
Iran, Islamic Republic of Lake Uromiyeh
Kazakhstan Korgalzhyn State Nature Reserve
Kazakhstan Tuzashchy and Karasor Lakes
Kazakhstan Uyalyshalkar Lake System
Kazakhstan Vicinity of Korgalzhyn village
Kazakhstan Zhumay-Mayshukyr Lake System
Latvia Engure lake
Latvia Liepaja lake
Latvia Teici and Pelecare bogs
Latvia Ziemelu bogs
Lithuania Birveta Fish-farm including segments of Dysna River and Birveta River valleys
Lithuania Kretuonas Landscape Reserve
Lithuania Nemunas delta regional Park
Mali Lac Débo - Lac Oualado Débo
Mali Lac Faguibine
Mali Lac Horo
Mali Timisobo - Képagou
Mauritania Gâat Mahmoûdé
Mauritania Gabou
Mauritania Tâmourt en Na'âj
Montenegro Bjelopavlici
Montenegro Bojana Delta
Montenegro Niksicko polje
Montenegro Skadar Lake
Montenegro Ulcinj saltpans
Netherlands Alkmaardermeer
Netherlands Eempolders
Netherlands Lake IJsselmeer
Netherlands Lauwersmeer
Netherlands Oudegaasterbrekken, Fluessen e.o.
Netherlands Sneekermeergebied
Netherlands Van Oordt's Mersken
Netherlands Witte en Zwarte Brekken
Netherlands Wormer- en Jisperveld & Kalverpolder
Netherlands Zuidlaardermeergebied
Nigeria Hadejia-Nguru wetlands
Pakistan Rann of Kutch Wildlife Sanctuary
Poland Biebrza river valley
Romania Buhuşu reservoir - Bacău - Tătărăşti
Romania Câmpia Crişurilor
Romania Cefa fish-ponds and Radvani wood
Romania Comana
Romania Danube Delta
Romania Jijiei şi Miletinului fish-ponds
Romania Lacurile Fălticeni
Romania Maglavit
Romania Miheşu de Câmpie-Taureni fish-ponds
Romania Suhaia
Russia (Asian) Batanakovskiye swamps
Russia (Asian) Khadyn lake
Russia (Central Asian) Dvuob'ye
Russia (Central Asian) Krutali Lake
Russia (Central Asian) Lower Ob'
Russia (European) Kozinka lake and Baranikovski segment of Manych
Senegal River Sénégal (Ntiagar to Richard-Toll)
Slovakia Senné
Slovenia Lake Cerknica
Slovenia River Drava
Somalia Far Waamo
South Sudan Lake Abiad (South Sudan)
South Sudan Sudd (Bahr-el-Jebel system)
Sudan Lake Abiad (Sudan)
Sweden Lake Ånn – Storlien
Sweden Muddus
Sweden Vindel Mountains (including Lake Tärna)
Tanzania Lake Manyara
Ukraine Syvash Bay
United Kingdom Dungeness To Pett Levels
United Kingdom Hamford Water
United Kingdom Humber Estuary
United Kingdom Lower Derwent Valley
United Kingdom Martin Mere
United Kingdom Mid-Essex Coast
United Kingdom Nene Washes
United Kingdom North Norfolk Coast
United Kingdom Ouse Washes
United Kingdom The Swale
Zambia Bangweulu Swamps
Zambia Barotse Floodplains
Zambia Kafue Flats

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Artificial/Aquatic - Irrigated Land (includes irrigation channels) suitable non-breeding
Artificial/Aquatic & Marine Artificial/Aquatic - Seasonally Flooded Agricultural Land major non-breeding
Artificial/Terrestrial Arable Land suitable non-breeding
Artificial/Terrestrial Pastureland suitable non-breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable non-breeding
Grassland Temperate suitable non-breeding
Marine Intertidal Salt Marshes (Emergent Grasses) suitable non-breeding
Marine Neritic Estuaries suitable non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable non-breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable non-breeding
Wetlands (inland) Seasonal/Intermittent Freshwater Lakes (over 8ha) suitable non-breeding
Wetlands (inland) Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) suitable non-breeding
Altitude   Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation

Utilisation
Purpose Scale
Food - human subsistence, national
Pets/display animals, horticulture international
Sport hunting/specimen collecting subsistence, national

Recommended citation
BirdLife International (2024) Species factsheet: Ruff Calidris pugnax. Downloaded from https://datazone.birdlife.org/species/factsheet/ruff-calidris-pugnax on 24/11/2024.
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 24/11/2024.