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NT
Ferruginous Duck Aythya nyroca

IUCN Red List Criteria

Near Threatened (criteria nearly met) A2cd+3cd+4cd 

IUCN Red List history

Year Category
2012 Near Threatened
2008 Near Threatened
2006 Near Threatened
2004 Near Threatened
2000 Lower Risk/Near Threatened
1996 Vulnerable
1994 Vulnerable
1988 Lower Risk/Least Concern

Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type continent
Average mass 574 g

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,200,000 medium
Extent of Occurrence non-breeding (km2) 1,200,000 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals medium Estimated 2005
Population trend Decreasing poor -
Number of subpopulations 2-100 - - -
Largest subpopulation 1001-1000000 - - -
Generation length (yrs) 7.6 - - -
Population justification: The population is estimated to number 2,400-2,600 in North Africa; 36,000-54,000 in eastern Europe; 25,000-100,000 in south-west Asia and north-east Africa (based on counts in the 1990s of 9,000 in Azerbaijan, 21,000 in Turkmenistan and 7,000 in Uzbekistan), and over 100,000 in the rest of Asia (based on tens of thousands breeding in Inner Mongolia (Xing Lianlian in litt. 1998), common occurrence on the Tibetan Plateau, and upwards of 90,000 being present on the hoars of north-east Bangladesh in January 2002).
Trend justification: This species's range has fluctuated considerably over the last c.150 years as it has modified its distribution. However, most figures suggest widespread declines. Owing to significant local declines it is classified as Vulnerable in Europe. Evidence of declines in the larger Asian populations is sparse, and sometimes contradictory. The overall population is estimated to be declining at a moderate rate.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Afghanistan Native Extant   Yes Yes  
Albania Native Extant     Yes Yes
Algeria Native Extant     Yes Yes
Armenia Native Extant Yes      
Austria Native Extant       Yes
Azerbaijan Native Extant       Yes
Bahrain Vagrant Extant     Yes  
Bangladesh Native Extant   Yes    
Belarus Native Extant       Yes
Belgium Native Extant   Yes    
Benin Vagrant Extant        
Bermuda (to UK) Vagrant Extant     Yes  
Bhutan Native Extant   Yes    
Bosnia and Herzegovina Native Extant       Yes
Bulgaria Native Extant     Yes Yes
Burkina Faso Vagrant Extant        
Cameroon Unknown Extant     Yes  
Cape Verde Vagrant Extant        
Central African Republic Native Extant   Yes    
Chad Native Extant   Yes    
China (mainland) Native Extant Yes      
Croatia Native Extant     Yes Yes
Cyprus Native Extant       Yes
Czech Republic Native Extant       Yes
Denmark Vagrant Extant        
Egypt Native Extant   Yes    
Eritrea Native Extant   Yes    
Ethiopia Native Extant   Yes    
Finland Vagrant Extant        
France Native Extant     Yes Yes
Gambia Native Extant   Yes    
Georgia Native Extant     Yes Yes
Germany Native Extant     Yes Yes
Ghana Vagrant Extant        
Greece Native Extant     Yes Yes
Hong Kong (China) Vagrant Extant        
Hungary Native Extant     Yes Yes
India Native Extant       Yes
Iran, Islamic Republic of Native Extant     Yes Yes
Iraq Native Extant     Yes Yes
Ireland Vagrant Extant        
Israel Native Extant   Yes Yes  
Italy Native Extant     Yes Yes
Japan Vagrant Extant        
Jordan Native Extant     Yes  
Kazakhstan Native Extant Yes      
Kuwait Native Extant   Yes Yes  
Kyrgyzstan Native Extant   Yes Yes  
Latvia Native Extant Yes      
Lebanon Native Extant   Yes Yes  
Libya Native Extant Yes      
Liechtenstein Native Extant   Yes Yes  
Lithuania Native Extant Yes      
Luxembourg Native Extant   Yes    
Macedonia, the former Yugoslav Republic of Native Extant       Yes
Maldives Vagrant Extant        
Mali Native Extant   Yes    
Malta Native Extant   Yes    
Mauritania Native Extant   Yes    
Moldova Native Extant       Yes
Mongolia Native Extant Yes      
Montenegro Native Extant       Yes
Morocco Native Extant   Yes    
Myanmar Native Extant   Yes    
Nepal Native Extant   Yes    
Netherlands Native Extant       Yes
Niger Native Extant   Yes    
Nigeria Native Extant   Yes    
Norway Vagrant Extant        
Oman Native Extant   Yes    
Pakistan Native Extant   Yes Yes  
Palestinian Authority Territories Native Extant     Yes  
Poland Native Extant Yes      
Portugal Native Extant       Yes
Qatar Native Extant       Yes
Romania Native Extant     Yes Yes
Russia (Asian) Native Extant Yes      
Russia (Central Asian) Native Extant Yes      
Russia (European) Native Extant     Yes Yes
Saudi Arabia Native Extant     Yes Yes
Senegal Native Extant   Yes    
Serbia Native Extant       Yes
Seychelles Vagrant Extant   Yes    
Sierra Leone Vagrant Extant        
Slovakia Native Extant       Yes
Slovenia Native Extant     Yes Yes
South Sudan Native Extant   Yes    
Spain Native Extant       Yes
Sudan Native Extant   Yes    
Sweden Vagrant Extant        
Switzerland Native Extant       Yes
Syria Native Extant     Yes Yes
Tajikistan Native Extant Yes      
Thailand Native Extant   Yes    
Togo Unknown Extant   Yes    
Tunisia Native Extant     Yes Yes
Turkey Native Extant       Yes
Turkmenistan Native Extant Yes      
Uganda Vagrant Extant        
Ukraine Native Extant     Yes Yes
United Arab Emirates Native Extant   Yes Yes  
United Kingdom Vagrant Extant        
Uzbekistan Native Extant       Yes
Vietnam Native Extant   Yes    
Western Sahara Native Extant   Yes Yes  
Yemen Native Extant   Yes Yes  

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Afghanistan Hamun-i-Puzak site factsheet
Algeria Complexe de zones humides de la plaine de Guerbes-Sanhadja site factsheet
Algeria Lac des Oiseaux / Garaet et Touyour site factsheet
Algeria Lac Oubeïra site factsheet
Algeria Lac Tonga site factsheet
Algeria Marais de Mekhada site factsheet
Armenia Armash fish-farm site factsheet
Armenia Lake Sevan site factsheet
Armenia Metsamor site factsheet
Austria Neusiedler See site factsheet
Austria Southern Seewinkel and Zitzmannsdorfer Wiesen site factsheet
Azerbaijan Lake Hajigabul site factsheet
Azerbaijan Lake Mahmudchala site factsheet
Azerbaijan Lake Sarysu site factsheet
Azerbaijan Shahdidi spit site factsheet
Bangladesh Aila Beel site factsheet
Bangladesh Hakaluki Haor site factsheet
Bangladesh Jamuna-Brahmaputra river site factsheet
Bangladesh Muhuri Dam site factsheet
Bangladesh Tanguar Haor and Panabeel site factsheet
Belarus Bielaje fish farm site factsheet
Belarus Mid Prypiac' site factsheet
Bosnia and Herzegovina Bardaca site factsheet
Bosnia and Herzegovina Hutovo blato site factsheet
Bulgaria Atanasovsko Lake site factsheet
Bulgaria Belene Islands Complex site factsheet
Bulgaria Durankulak Lake site factsheet
Bulgaria Garvansko Marsh site factsheet
Bulgaria Hadzi Dimitrovo Fish-ponds site factsheet
Bulgaria Kalimok Complex site factsheet
Bulgaria Mandra-Poda complex site factsheet
Bulgaria Mechka Fish-ponds site factsheet
Bulgaria Orsoya Fish-ponds site factsheet
Bulgaria Rayanovtsi site factsheet
Bulgaria Shabla Lake Complex site factsheet
Bulgaria Srebarna site factsheet
Bulgaria Tsibarsko Marsh site factsheet
Bulgaria Zvanichevo Fish-ponds site factsheet
Chad Lake Fitri site factsheet
Croatia Alluvial wetlands of the River Danube site factsheet
Croatia Alluvial wetlands of the River Drava site factsheet
Croatia Donji Miholjac fish-ponds site factsheet
Croatia Grudnjak fish-ponds site factsheet
Croatia Jelas field including fishponds and wet pastures along Sava RIver site factsheet
Croatia Lower Sava river site factsheet
Croatia Nasicka Breznica fish-ponds site factsheet
Cyprus Akrotiri Peninsula - Episkopi Cliffs site factsheet
Egypt Aswan reservoir site factsheet
Egypt Lake Burullus site factsheet
Egypt Lake Nasser site factsheet
Egypt Upper Nile site factsheet
Egypt Wadi El Rayan Protected Area site factsheet
Ethiopia Bishoftu lake site factsheet
Ethiopia Chelekleka lake and swamp site factsheet
Ethiopia Green Lake site factsheet
Ethiopia Lake Ashenge site factsheet
Greece Amvrakikos gulf site factsheet
Greece Lake Chimaditis and Lake Zazaris site factsheet
Greece Lake Distos site factsheet
Greece Lake Kalodiki, Margariti and Karteri marshes site factsheet
Greece Lake Kastoria (Orestiada) site factsheet
Greece Lake Kerkini site factsheet
Greece Lake Mitrikou (Ismarida) site factsheet
Greece Lake Stymphalia site factsheet
Greece Lakes Trichonida and Lysimachia site factsheet
Greece Nestou delta and coastal lagoons site factsheet
Greece Porto Lagos, Lake Vistonis, and coastal lagoons (Lakes of Thrace) site factsheet
Greece Reservoirs of former Lake Karla site factsheet
Greece Sperchios valley and delta-Maliakos gulf site factsheet
Hungary Bodrogzug–Taktaköz site factsheet
Hungary Hortobágy and Tisza-to site factsheet
Hungary Inner Somogy site factsheet
Hungary Kesznyéten site factsheet
Hungary Lake Kis-Balaton site factsheet
Hungary Lower Tisza Valley site factsheet
Hungary Nagy-berek of Fonyód site factsheet
Hungary Pacsmag Lakes of Regöly site factsheet
Hungary Sárvíz Valley site factsheet
India Chakrashila Complex site factsheet
India Harike Lake Bird Sanctuary site factsheet
India Kanjli Lake site factsheet
India Tso Morari Lake and adjacent marshes site factsheet
Iran, Islamic Republic of Anzali Mordab complex site factsheet
Iran, Islamic Republic of Arjan Protected Area site factsheet
Iran, Islamic Republic of Cheghakor marsh site factsheet
Iran, Islamic Republic of Dez river marshes and plains site factsheet
Iran, Islamic Republic of Gandoman marsh site factsheet
Iran, Islamic Republic of Gori Gol site factsheet
Iran, Islamic Republic of Hamoun-i Sabari and Hamoun-i Hirmand site factsheet
Iran, Islamic Republic of Hashelan marsh and Doh Tappeh plains site factsheet
Iran, Islamic Republic of Lake Kobi site factsheet
Iran, Islamic Republic of Lake Uromiyeh site factsheet
Iran, Islamic Republic of Lake Zaribar site factsheet
Iran, Islamic Republic of Seyed Mohalli, Zarin Kola and Larim Sara site factsheet
Iran, Islamic Republic of Shadegan marshes and tidal mudflats of Khor-al Amaya and Khor Musa site factsheet
Iran, Islamic Republic of Shur Gol, Yadegarlu and Dorgeh Sangi lakes site factsheet
Iran, Islamic Republic of South end of the Hamoun-i Puzak site factsheet
Iran, Islamic Republic of Voshmigir dam site factsheet
Iraq Attariya plains site factsheet
Iraq Baquba wetlands site factsheet
Iraq Haur Al Sa'adiyah site factsheet
Israel Jezre'el, Harod and Bet She'an valleys site factsheet
Israel Judean foothills site factsheet
Kazakhstan Korgalzhyn State Nature Reserve site factsheet
Kazakhstan Lesser Aral Sea site factsheet
Kazakhstan Syrdarya Delta Lakes site factsheet
Kazakhstan Syrdarya Delta Lakes site factsheet
Kyrgyzstan Lake Chatyr-Kul site factsheet
Kyrgyzstan Tokmak Pheasant Reserve site factsheet
Kyrgyzstan Tulek Valley site factsheet
Lithuania Metelys, Dusia & Obelija lakes site factsheet
Macedonia, the former Yugoslav Republic of Lake Dojran site factsheet
Macedonia, the former Yugoslav Republic of Lake Prespa site factsheet
Macedonia, the former Yugoslav Republic of Pelagonia site factsheet
Mali Lac Faguibine site factsheet
Mali Lac Fati site factsheet
Mali Lac Horo site factsheet
Mali Lac Télé site factsheet
Mali Séri site factsheet
Malta Malta-Gozo Channel site factsheet
Mauritania Lac d'Aleg site factsheet
Mauritania Sawana - Oum Lellé site factsheet
Montenegro Lake Skadar site factsheet
Myanmar Ayeyarwady River: Myitkyina to Sinbo Section site factsheet
Myanmar Inle Lake site factsheet
Myanmar Myittha Lakes site factsheet
Myanmar Nyaung Kan - Minhla Kan site factsheet
Nepal Annapurna Conservation Area site factsheet
Nepal Barandabhar forests and wetlands site factsheet
Nepal Bardia National Park site factsheet
Nepal Chitwan National Park site factsheet
Nepal Ghodaghodi Lake site factsheet
Nepal Jagdishpur Reservoir site factsheet
Nepal Koshi Tappu Wildlife Reserve and Koshi Barrage site factsheet
Nepal Rara National Park site factsheet
Nepal Sagarmatha National Park site factsheet
Nepal Sukla Phanta Wildlife Reserve site factsheet
Nigeria Hadejia-Nguru wetlands site factsheet
Oman Khawr ad Dahariz site factsheet
Oman Khawr Rouri site factsheet
Oman Khor Dirif site factsheet
Oman Wadi Darbat site factsheet
Pakistan Kurram River system site factsheet
Pakistan Nara canal wetlands (including Soonhari, Sadhori and Sanghriaro lakes) site factsheet
Poland Barycz river valley site factsheet
Poland Mosty-Zahajki Site site factsheet
Poland Parczew forests site factsheet
Poland Podedworze Reservoir site factsheet
Poland Polesie site factsheet
Poland Sandomierz Forest site factsheet
Poland Tysmienica river valley site factsheet
Portugal Pera marsh site factsheet
Portugal Vilamoura site factsheet
Romania Balta Albă - Amara - Jirlău site factsheet
Romania Balta Mică a Brăilei site factsheet
Romania Balta Vederoasa site factsheet
Romania Belceşti reservoir site factsheet
Romania Bistreţ site factsheet
Romania Blahniţa site factsheet
Romania Braţul Borcea site factsheet
Romania Buhuşu reservoir - Bacău - Tătărăşti site factsheet
Romania Calafat - Ciuperceni - Dunăre site factsheet
Romania Câmpia Gherghiţei site factsheet
Romania Cârja - Maţa - Rădeanu - Roşcani site factsheet
Romania Cefa fish-ponds and Radvani wood site factsheet
Romania Ciocăneşti - Dunăre site factsheet
Romania Comana site factsheet
Romania Cursul Dunării - Baziaş - Porţile de Fier site factsheet
Romania Dăbuleni - Grinduri site factsheet
Romania Danube Delta site factsheet
Romania Dumbrăviţa - Rotbav - Măgura Codlei site factsheet
Romania Dunăre - Olteniţa site factsheet
Romania Dunăre - Ostroave site factsheet
Romania Dunărea Veche (Braţul Măcin) site factsheet
Romania Fizes valley site factsheet
Romania Grădiştea - Dridu site factsheet
Romania Gruia - Gârla Mare site factsheet
Romania Ianca - Plopul - Sărat site factsheet
Romania Iazurile de pe Văile Ibănesei - Başeului - Podrigăi site factsheet
Romania Iezerul Călăraşi site factsheet
Romania Ilfov reservoir site factsheet
Romania Jijiei şi Miletinului fish-ponds site factsheet
Romania Lacurile Fălticeni site factsheet
Romania Lake Beibugeac (Plopu) site factsheet
Romania Lake Bugeac site factsheet
Romania Lake Dunăreni site factsheet
Romania Lake Gălăţui site factsheet
Romania Lake Oltina site factsheet
Romania Lake Strachina site factsheet
Romania Lunca Siretului Inferior site factsheet
Romania Măxineni site factsheet
Romania Olt valley site factsheet
Romania Olteniţa - Ulmeni site factsheet
Romania Ostrovu Lung - Gostinu site factsheet
Romania Podişul Hârtibaciului site factsheet
Romania Stânca lake - Costeşti site factsheet
Romania Suhaia site factsheet
Romania Vedea - Dunăre site factsheet
Russia (Central Asian) Nizhnechumyshskaya site factsheet
Russia (European) Achikol'skiye lakes site factsheet
Russia (European) Adzhi Lake site factsheet
Russia (European) Agrakhanski Bay (North Agrakhan) site factsheet
Russia (European) Budary lakes site factsheet
Russia (European) Chechen' Island and east seaside of Agrakhan peninsula site factsheet
Russia (European) Dadynskiye lakes site factsheet
Russia (European) Delta of the River Don site factsheet
Russia (European) Floodplain of the Terek river near Staroshchedrinskaya site factsheet
Russia (European) Karakol'skiye lakes site factsheet
Russia (European) Kazachka site factsheet
Russia (European) Kissyk area site factsheet
Russia (European) Lake 'Southern Agrakhan' site factsheet
Russia (European) Mekhteb reservoir site factsheet
Russia (European) Nizhnekumskiye floods site factsheet
Russia (European) Sarpinskaya lake-system site factsheet
Russia (European) Southern part of Chograiski reservoir site factsheet
Russia (European) Yeiski salt-lakes site factsheet
Saudi Arabia Al-Ha'ir site factsheet
Saudi Arabia Al-Hasa lagoons site factsheet
Saudi Arabia King Faisal Airbase, Tabuk site factsheet
Saudi Arabia Malaki dam site factsheet
Senegal Djoudj wetlands site factsheet
Serbia Carska bara site factsheet
Serbia Gornje Podunavlje site factsheet
Serbia Jegricka site factsheet
Serbia Labudovo Okno site factsheet
Serbia Srednje Potamišje site factsheet
Serbia Subotica lakes and sandy terrain site factsheet
Slovakia Medzibodrozie site factsheet
Slovenia Črete site factsheet
Slovenia Lake Cerknica site factsheet
Syria Bahrat Homs site factsheet
Syria Tual al-'Abba site factsheet
Tajikistan Ishkashim site factsheet
Tunisia Douz Laâla site factsheet
Tunisia El Houareb reservoir site factsheet
Tunisia Ghidma site factsheet
Tunisia Ichkeul site factsheet
Tunisia Lebna reservoir site factsheet
Turkey Adıyaman - Gölbaşı Lakes site factsheet
Turkey Akdoğan Mountain site factsheet
Turkey Devegeçidi Dam site factsheet
Turkey Göksu Delta site factsheet
Turkey Hotamış Marshes site factsheet
Turkey Işıklı Lake site factsheet
Turkey Karakaya Reservoir site factsheet
Turkey Karakuyu Marshes site factsheet
Turkey Kızılırmak Delta site factsheet
Turkey Kocaçay Delta site factsheet
Turkey Marmara Lake site factsheet
Turkey Mogan lake site factsheet
Turkey Sultan Marsh site factsheet
Turkey Terkos Basin site factsheet
Turkey Uluabat Lake site factsheet
Turkey Van Plains site factsheet
Turkmenistan Ekerem - Esenguly site factsheet
Turkmenistan Kopetdagkhovudan site factsheet
Turkmenistan Sarygamysh site factsheet
Turkmenistan South Cheleken Bay site factsheet
Turkmenistan Turkmen Bay site factsheet
Turkmenistan Turkmenbashy Bay site factsheet
Turkmenistan Zeyit - Kelif site factsheet
Ukraine Kagul lake site factsheet
Ukraine Kugurluj and Kartal lakes site factsheet
Ukraine Latorytsya river valley near Chop site factsheet
Ukraine River Danube site factsheet
Ukraine Shats'ki lakes site factsheet
Ukraine Snake island site factsheet
Uzbekistan Aksay Lake and surrounding desert site factsheet
Uzbekistan Aranasay Lake System site factsheet
Uzbekistan Balykchi Fish Farm site factsheet
Uzbekistan Dalverzin State Forestry and Hunting Management Area site factsheet
Uzbekistan Dengizkul Lake site factsheet
Uzbekistan Dzheiran Ecocentre site factsheet
Uzbekistan Kagan Fish Farm site factsheet
Uzbekistan Karakyr Lakes site factsheet
Uzbekistan Northern shore of Aydarkul Lake site factsheet
Uzbekistan Rogatoe Lake site factsheet
Uzbekistan Sudochye Lake site factsheet
Uzbekistan Talimarzhan Reservoir site factsheet
Uzbekistan Tudakul and Kuymazar Reservoirs site factsheet
Uzbekistan Tuzkan Lake site factsheet
Uzbekistan Zekry Lake site factsheet
Uzbekistan Zholdyrbas Lake site factsheet
Yemen Ta'izz wadis site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Aquaculture Ponds suitable breeding
Artificial/Aquatic & Marine Aquaculture Ponds suitable non-breeding
Artificial/Aquatic & Marine Wastewater Treatment Areas marginal resident
Artificial/Aquatic & Marine Water Storage Areas (over 8ha) suitable breeding
Artificial/Aquatic & Marine Water Storage Areas (over 8ha) suitable non-breeding
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable non-breeding
Marine Coastal/Supratidal Coastal Freshwater Lakes suitable non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major non-breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) major breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) major non-breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Species mortality
Climate change & severe weather Droughts Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Human intrusions & disturbance Recreational activities Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Species disturbance
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Desert False Indigo (Amorpha fruticosa) Timing Scope Severity Impact
Ongoing Minority (<50%) Causing/Could cause fluct Low Impact: 5
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Grass Carp (Ctenopharyngodon idella) Timing Scope Severity Impact
Ongoing Minority (<50%) Causing/Could cause fluct Low Impact: 5
Stresses
Indirect ecosystem effects
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Muskrat (Ondatra zibethicus) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Water Hyacinth (Eichhornia crassipes) Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Wels Catfish (Silurus glanis) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Problematic native species/diseases / Common Pochard (Aythya ferina) Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Hybridisation
Invasive and other problematic species, genes & diseases Problematic native species/diseases / Tufted Duck (Aythya nyroca) Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Hybridisation
Invasive and other problematic species, genes & diseases Problematic native species/diseases / Unspecified species Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Hybridisation
Natural system modifications Dams & water management/use / Dams (size unknown) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Other ecosystem modifications Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Pollution Industrial & military effluents / Oil spills Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Pets Whole Adults and juveniles Wild International Non-trivial Recent
Sport Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Aythya nyroca. Downloaded from http://www.birdlife.org on 26/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 26/07/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Near Threatened
Family Anatidae (Ducks, Geese, Swans)
Species name author (Güldenstädt, 1770)
Population size mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 1,200,000 km2
Country endemic? No
Links to further information
- Summary information on this species