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Eurasian River Warbler Locustella fluviatilis

IUCN Red List history

Year Category
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 Low
Land mass type   Average mass 16.1 g


  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,180,000
Extent of Occurrence non-breeding (km2) 1,180,000
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals poor Estimated 2009
Population trend Stable -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 3.7 - - -
Population justification: In Europe, the breeding population is estimated to number 1,900,000-4,600,000 breeding pairs, equating to 5,700,000-13,800,000 individuals (BirdLife International 2004). Europe forms 75-94% of the global range, so a very preliminary estimate of the global population size is 6,060,000-18,400,000 individuals, although further validation of this estimate is needed.
Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats. In Europe, trends since 1982 have been stable, based on provisional data for 21 countries from the Pan-European Common Bird Monitoring Scheme (EBCC/RSPB/BirdLife/Statistics Netherlands; P. Vorisek in litt. 2008).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Algeria Native Extant      
Austria Native Extant Yes    
Azerbaijan Native Extant      
Bahrain Vagrant Extant     Yes
Belarus Native Extant Yes    
Belgium Vagrant Extant      
Bosnia and Herzegovina Native Extant Yes    
Botswana Vagrant Extant      
Bulgaria Native Extant Yes    
Croatia Native Extant Yes    
Cyprus Vagrant Extant      
Czech Republic Native Extant Yes    
Denmark Native Extant Yes   Yes
Egypt Native Extant      
Estonia Native Extant Yes    
Ethiopia Native Extant      
Finland Native Extant Yes    
France Vagrant Extant      
Germany Native Extant Yes    
Greece Native Extant     Yes
Hungary Native Extant Yes    
Iran, Islamic Republic of Native Extant     Yes
Iraq Native Extant     Yes
Israel Native Extant      
Jordan Native Extant     Yes
Kazakhstan Native Extant Yes    
Kenya Native Extant      
Kuwait Native Extant     Yes
Latvia Native Extant Yes    
Lebanon Vagrant Extant     Yes
Libya Native Extant      
Lithuania Native Extant Yes    
Malawi Native Extant      
Malta Vagrant Extant      
Moldova Native Extant Yes    
Montenegro Native Extant Yes    
Morocco Native Extant      
Mozambique Vagrant Extant      
Namibia Vagrant Extant      
Netherlands Vagrant Extant      
Norway Vagrant Extant      
Oman Vagrant Extant     Yes
Poland Native Extant Yes    
Portugal Vagrant Extant      
Romania Native Extant Yes    
Russia (Central Asian) Native Extant Yes    
Russia (European) Native Extant Yes    
Saudi Arabia Native Extant     Yes
Serbia Native Extant Yes    
Slovakia Native Extant Yes    
Slovenia Native Extant Yes    
Somalia Vagrant Extant      
South Africa Native Extant      
Spain Vagrant Extant      
Sudan Native Extant     Yes
Svalbard and Jan Mayen Islands (to Norway) Vagrant Extant      
Sweden Native Extant Yes    
Switzerland Vagrant Extant      
Syria Native Extant     Yes
Tanzania Native Extant      
Tunisia Native Extant      
Turkey Native Extant      
Uganda Vagrant Extant      
Ukraine Native Extant Yes    
United Arab Emirates Vagrant Extant     Yes
United Kingdom Vagrant Extant      
Yemen Vagrant Extant     Yes
Zambia Native Extant      
Zimbabwe Native Extant      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Czech Republic Krivoklatsko (Krivoklatsko region) site factsheet
Czech Republic Poodri site factsheet
Russia (European) Buzulukski forest site factsheet
Ukraine Chonovyny marsh site factsheet
Ukraine Mzha river valley site factsheet
Ukraine Pryp'yat' river valley site factsheet
Ukraine Stokhod river valley site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Temperate suitable breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable non-breeding
Grassland Temperate suitable breeding
Savanna Dry suitable non-breeding
Shrubland Subtropical/Tropical Moist suitable non-breeding
Shrubland Temperate suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2014) Species factsheet: Locustella fluviatilis. Downloaded from on 22/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from on 22/07/2014.

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 Least Concern
Family Sylviidae (Old World warblers)
Species name author (Wolf, 1810)
Population size mature individuals
Population trend Stable
Distribution size (breeding/resident) 1,180,000 km2
Country endemic? No
Links to further information
- Summary information on this species