Population information

Order name Anseriformes
Family name Anatidae
Scientific name Bucephala clangula Common name Common Goldeneye
Population name clangula, North-east Europe/Adriatic
Breeding range NE Europe Non-breeding range Middle Danube, Adriatic
Red List Category Least Concern
Ramsar regions Europe
Notes

Conservation Framework

Conservation framework Notes
AEWA
EUBD
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 -1 -1
WPE 2 1990 1995 75,000 75,000 [R578]
WPE 3 1990 1995 75,000 75,000 [R578]
WPE 4 1990 2000 200,000 200,000 [S5695] [R63]
WPE 5 1990 2000 200,000 200,000 Expert opinion [R63]
CSR 4 1990 2000 200,000 200,000 Expert opinion [R63]
CSR 5 1990 2000 200,000 200,000 Expert opinion [R63]
CSR 6 1990 2012 50,000 200,000 Best guess [S8566] [R1365] [R1362] [R1361]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 1990 2000 STA No idea [R66]
CSR 4 1990 2000 STA No idea [R66]
CSR 5 1990 2000 STA No idea [R66]
CSR 6 2000 2012 STA Poor [T6559] [R1362]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 1997 750
WPE 3 2002 750
WPE 4 2006 2000
WPE 5 2012 2000
CSR 4 0 -1
CSR 5 0 -1
CSR 6 0 -1

References

  • R578 - Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae populations in Africa and western Eurasia. Wetlands International Publication No. 41. Wetlands International, Wageningen, NL. 336 pp.
  • R63 - BirdLife International (2004)b. Birds in Europe, population estimates, trends and conservation status. Cambridge, UK: BirdLife International. (BirdLife Conservation Series No. 12).
  • R66 - BirdLife International Website 2002
  • R1365 - Wetlands International, International Waterbird Census, unpublished data, 2014.
  • R1362 - European Topic Centre on Biological Diversity (in prep) Population and trend data provided by the EU Member States in the frame of their reporting under Article 12 of the EU Birds Directive. Online fact sheets. European Topic Centre on Biological Diversity, Paris. URL: http://bd.eionet.europa.eu/activities/Reporting/Article_12/Reports_2013/Member_State_Deliveries. Accessed on 31 July 2014.
  • R1361 - BirdLife International, BTO, EBCC, CSO, IUCN, RSPB, SOVON, Wetlands International (in prep) Population and trend data provided to the European Red List of Birds Project funded by the European Commission. Digital dataset. BirdLife International, Cambridge, UK. Accessed on 31 July 2014.
  • R1548 - Wetlands International (2017) Flyway trend analyses based on data from the African-Eurasian Waterbird Census from the period of 1967-2015. Ede, The Netherlands: Wetlands International. Temporary URL: https://www.dropbox.com/sh/r76f4eyuhzu65co/AADzzQkhySsUDsmwFJUcHs91a?dl=0
  • R1549 - BirdLife International 2015. European Red List of Birds. Luxembourg: Office for Official Publications of the European Communities. http://datazone.birdlife.org/info/euroredlist

Notes

  • S5695 - Earlier estimates, based on winter counts, were considerable under-estimates. Estimate has been increased in line with NW Europe population, and within range of Russian breeding population in 64.
  • S8566 - The avarege count total was 14,963 individuals between 2008 and 2012. The sum of the site-level 5-year means is 35,840 individuals during the same period. The sum of the national estimates for wintering birds in IT, SI, HU, SK and GR is 22,195-34,179 individuals (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). However, the latter does not include most of the former Yugoslavia. The population estimate is based on the size of the RU population, but it is unclear from the description how was derived.
  • T6559 - Overall trend for IT, SI, HU, SK ad GR is stable both for the long and short-term (1980-2012: 0.9995-1.0153, 2000-2012: 0.9956-1.0371, European Topic Centre on Biological Diversity).
  • S9066 - The avarege count total was 3,500 - 8,700 individuals between 2011 and 2015 (Wetlands International 2017). The sum of the national estimates for wintering birds in IT, SI, HR, BA, ME, AL, MK, HU, RS, SK and GR is 30,000 - 47,179 individuals (BirdLife International 2015). The maximum population estimate is based on the estimate Delany and Scott (2006) have derived from the RU breeding population. [However, it is unclear from their description how this figure was derived and how it adds up with the estimates for the other populations considering that the minimum estimate for European RU is 200,000 breeding pairs, i.e. 600,000 individuals. Having already allocated 25%, i.e. 150,000 individuals to the NW &┬áCentral European population, adding all the 200,000 individuals to the Adriatic population and 60,000 individuals to the Black Sea population still leaves 190,000 unallocated individuals.]
  • T6966 - According to BirdLife International (2015) national wintering population trends are decreasing in RS and AL, stable or unknown in other countries and increasing in SK, which compensates for the losses in those other countries. IWC trend analyses report a a steep decline (Wetlands International 2017), but recent data from both SK and RS are misising and values for these countries were mainly imputed in the short-term. Therefore, the IWC trend is considered to be less certain.



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on