VU
Aquatic Warbler Acrocephalus paludicola



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
- - A2c

Red List history
Year Category Criteria
2016 Vulnerable A2c
2013 Vulnerable A2c
2012 Vulnerable A2c
2008 Vulnerable A2c
2004 Vulnerable
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 578,000 medium
Extent of Occurrence non-breeding (km2) 1,320,000 medium
Extent of Occurrence breeding/resident (km2) 1,500 medium
Number of locations 11-100 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 22000-32000 good estimated 2009
Population trend Decreasing medium suspected -
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 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 4.4 - - -

Population justification: The global population is estimated at 11,000-16,000 singing males (M. Flade in litt. 2012), equivalent to 22,000-32,000 mature individuals or 33,000-48,000 individuals in total. The European population is estimated at 9,000-13,800 calling or lekking males, which equates to 18,000-27,600 mature individuals or 27,000-41,400 individuals (BirdLife International 2015).

Trend justification: The majority of Aquatic Warblers now breed in Europe, where data collated for the European Red List of Birds (BirdLife International 2015) estimated that populations are continuing to decrease by 30-49% in 13.2 years (three generations). Outside Europe remaining populations are small and considered at high risk of extinction.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Algeria N Extant Yes
Andorra U Extant Yes
Austria N Extinct Yes
Belarus N Extant Yes
Belgium N Extant Yes
Bulgaria N Extant Yes
Burkina Faso U Extant Yes Yes
Croatia N Extant
Cyprus V Extant
Czechia N Extant Yes
Denmark V Extant
Egypt V Extant
Estonia V Extant
Finland V Extant
France N Extant Yes
Germany N Extant Yes Yes
Ghana N Extant Yes
Greece V Extant
Hungary N Extinct Yes
Ireland V Extant
Israel V Extant
Italy N Extant Yes
Kazakhstan V Extant
Latvia N Extant Yes
Lithuania N Extant Yes
Luxembourg N Extant Yes
Mali U Extant Yes
Malta V Extant
Mauritania N Extant Yes
Montenegro N Extinct Yes
Morocco N Extant Yes
Netherlands N Extant Yes
North Macedonia V Extant
Norway V Extant
Poland N Extant Yes
Portugal N Extant Yes
Romania N Extant Yes
Russia N Possibly Extinct Yes
Russia (Central Asian) N Possibly Extinct Yes
Russia (European) N Possibly Extinct Yes
San Marino U Extant Yes
Senegal N Extant Yes
Serbia N Extinct Yes
Slovakia N Extinct Yes
Slovenia N Extant Yes
Spain N Extant Yes
Sweden V Extant
Switzerland N Extant Yes
Tunisia V Extant
Turkey V Extant
Ukraine N Extant Yes
United Kingdom N Extant Yes
Western Sahara N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Belarus Balota Dzikoje
Belarus Balota Zvaniec
Belarus Dzivin - Vialiki Lies
Belarus Haradzienskaja Svislač
Belarus Lelchitsy-Ubort
Belarus Mid Prypiac'
Belarus Prostyr
Belarus Ščara floodplain
Belarus Servač
Belarus Sporaŭskaje balota
Belarus Vyhanaščanskija baloty
France Estuaire de la Gironde : marais de la rive nord
France Marais de la Baie d'Audierne
Germany Barnbruch
Germany Danube valley: Regensburg-Vilshofen
Germany Greifswalder Bodden
Germany Lower Oder valley
Germany Peenetal (Peenetalmoor and Anklamer Stadtbruch)
Germany Wagbach lowlands
Hungary Hortobágy and Tisza-to
Latvia Liepaja lake
Lithuania Flooded coastal meadows near Svencele raised-bog
Lithuania Flooded coastal meadows near Tyrai bog
Lithuania Flooded meadows near Sausgalviai settlement
Lithuania Nemunas delta regional Park
Lithuania Zuvintas Biosphere Reserve
Luxembourg Upper Valley of the Alzette
Luxembourg Valley of the Syre
Poland Biebrza river valley
Poland Bubnow Marsh
Poland Chelm calcareous marshes
Poland Delta of the Swina river
Poland Kampinos forest
Poland Lower Odra river valley
Poland Marshy Valley of the Narew River
Poland Middle Bug river valley
Poland Miedwie site
Poland Narew river gaps
Poland Ner River Valley
Poland Rozwarowo Marshes
Poland Siemianowka Reseirvoir
Poland Upper Narew River Valley
Poland Warta River Mouth
Poland Wizna Swamps
Russia (European) Kamsko-Yayvenski wetland
Russia (European) Neman river Delta and the coast of the Curonian Bay
Russia (European) Nizhnekamskaya flood-plain
Russia (European) Watershed of Bityug and Tsna rivers
Spain Carrión-Frómista
Spain Chingudi-Bidasoa estuary
Spain Costa da Morte
Spain Esteiro do Miño
Spain Páramo Bajo de León
Spain Ría de Villaviciosa
Spain Salburua
Spain Tierra de Campos steppes
Ukraine Pryp'yat' river valley
Ukraine Shats'ki lakes
Ukraine Stokhod river valley
Ukraine Styr' river valley (Kolky village)
Ukraine Supij marsh
Ukraine Svydovets protected area
Ukraine Syra Pogonya mire
Ukraine Turiya river valley
Ukraine Udaj river valley
United Kingdom Marazion Marsh
United Kingdom Weymouth Wetlands

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Pastureland suitable breeding
Artificial/Terrestrial Pastureland suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major non-breeding
Altitude 0 - 200 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 Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Gathering terrestrial plants - Unintentional effects (species is not the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation
Climate change & severe weather Droughts Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Ecosystem degradation
Natural system modifications Dams & water management/use - Large dams Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2020) Species factsheet: Acrocephalus paludicola. Downloaded from http://www.birdlife.org on 21/01/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/01/2020.