LC
River Warbler Locustella fluviatilis



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., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and 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
2024 Least Concern
2016 Least Concern
2014 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 low
Land-mass type Average mass 16 g
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 7,580,000 km2
Extent of Occurrence (non-breeding) 1,570,000 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 3090000-5510000 mature individuals poor estimated 2018
Population trend decreasing - estimated -
Generation length 2.23 years - - -

Population justification: In Europe, the total population size is estimated at 2,780,000-4,960,000 mature individuals, with 1,390,000-2,480,000 breeding pairs (BirdLife International 2021), and comprises approximately 90% of the species' global range, so a very preliminary estimate of the global population size is between 3,090,000-5,510,000 mature individuals, although further validation of this estimate is desirable. The species' population in Europe is considered to have undergone a small decline overall over three generations (10 years) (BirdLife International 2021). As this region holds the vast majority of the species' global range, the global population size is considered to be decreasing slowly over three generations.

Trend justification:    .


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Czechia Krivoklatsko (Krivoklatsko region)
Czechia Poodri
Russia (European) Buzulukski forest
Ukraine Chonovyny marsh
Ukraine Mzha river valley
Ukraine Pryp'yat' river valley
Ukraine Stokhod river valley

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 - 1700 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: River Warbler Locustella fluviatilis. Downloaded from https://datazone.birdlife.org/species/factsheet/river-warbler-locustella-fluviatilis on 23/11/2024.
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 23/11/2024.