Data Zone
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. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| C2a(i,ii); D | C2a(i,ii); D | C2a(i,ii); D1 |
| Year | Category | Criteria |
|---|---|---|
| 2018 | Critically Endangered | C2a(i,ii);D |
| 2016 | Critically Endangered | C2a(i,ii);D |
| 2015 | Critically Endangered | C2a(i,ii);D |
| 2012 | Critically Endangered | C2a(i,ii);D |
| 2010 | Critically Endangered | C2a(ii); D1 |
| 2009 | Critically Endangered | C2a(ii); D1 |
| 2008 | Critically Endangered | |
| 2004 | Critically Endangered | |
| 2000 | Critically Endangered | |
| 1996 | Critically Endangered | |
| 1994 | Critically Endangered | |
| 1988 | Threatened |
| Migratory status | full migrant | Forest dependency | does not normally occur in forest |
| Land-mass type |
continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 303,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 11,300,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 1-49 mature individuals | medium | estimated | 2012 |
| Population trend | decreasing | poor | suspected | 2000-2010 |
| Generation length | 9.9 years | - | - | - |
| Number of subpopulations | 1 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: The population is assumed to be tiny (fewer than 50 individuals and mature individuals) based on the lack of recent records. There are no recent confirmed sightings of this species within Europe, where it formerly regularly wintered. At the European level, it is classified as Critically Endangered (Possibly Extinct) (BirdLife International 2015). A record of an individual at Druridge Bay, Northumberland (Great Britain) in May 1998 was not confirmed (Collinson et al. 2014).
Trend justification: There are very few recent (uncontroversial) records of this species and they are becoming more infrequent so a continuing decline is suspected, although the rate is not known.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Albania | extant | native | yes | yes | ||
| Algeria | extant | native | yes | yes | ||
| Austria | extant | vagrant | yes | |||
| Azerbaijan | extant | native | yes | yes | ||
| Bosnia and Herzegovina | extant | vagrant | yes | yes | ||
| Bulgaria | extant | native | yes | |||
| Canada | extant | vagrant | ||||
| Croatia | extant | native | yes | yes | ||
| Cyprus | extant | vagrant | yes | |||
| Czechia | extant | uncertain | ||||
| Egypt | extant | vagrant | yes | |||
| France | extant | vagrant | yes | |||
| Germany | extant | vagrant | ||||
| Greece | extant | native | yes | yes | ||
| Hungary | extant | native | yes | |||
| Iran, Islamic Republic of | extant | native | yes | |||
| Iraq | extant | native | yes | yes | ||
| Israel | extant | vagrant | yes | |||
| Italy | extant | native | yes | yes | ||
| Japan | extant | uncertain | ||||
| Kazakhstan | extant | native | yes | |||
| Kuwait | extant | vagrant | yes | |||
| Libya | extant | uncertain | yes | |||
| Malta | extant | vagrant | yes | |||
| Montenegro | extant | native | yes | |||
| Morocco | extant | native | yes | |||
| Netherlands | extant | vagrant | ||||
| North Macedonia | extant | native | yes | yes | ||
| Palestine | extant | vagrant | yes | |||
| Poland | extant | vagrant | ||||
| Portugal | extant | vagrant | ||||
| Romania | extant | native | yes | |||
| Russia | extant | native | yes | yes | ||
| Russia (Central Asian) | extant | native | yes | |||
| Russia (European) | extant | native | yes | |||
| Saudi Arabia | extant | native | yes | |||
| Serbia | extant | native | yes | |||
| Spain | extant | vagrant | ||||
| Sudan | possibly extinct | uncertain | yes | |||
| Switzerland | extant | vagrant | ||||
| Tunisia | extant | native | yes | |||
| Türkiye | extant | native | yes | |||
| Ukraine | extant | native | yes | |||
| United Kingdom | extant | vagrant | ||||
| Uzbekistan | extant | native | yes | |||
| Yemen | extant | native | yes |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Water Storage Areas (over 8ha) | suitable | non-breeding |
| Artificial/Terrestrial | Arable Land | suitable | non-breeding |
| Grassland | Temperate | suitable | non-breeding |
| Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | major | non-breeding |
| Marine Intertidal | Salt Marshes (Emergent Grasses) | major | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | breeding |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Marshes/Pools | unset | non-breeding |
| Altitude | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Unknown | Unknown | Unknown | ||||||
|
|||||||||
| Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Natural system modifications | Other ecosystem modifications | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Unknown | Unknown | ||||||
|
|||||||||
| Purpose | Scale |
|---|---|
| Food - human | subsistence, national |
| Food - human | subsistence, national |
| Sport hunting/specimen collecting | subsistence, national |
| Sport hunting/specimen collecting | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Slender-billed Curlew Numenius tenuirostris. Downloaded from
https://datazone.birdlife.org/species/factsheet/slender-billed-curlew-numenius-tenuirostris 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.