|Scientific name||Bucephala clangula||Common name||Common Goldeneye|
|Population name||clangula, North-west & Central Europe (win)|
|Breeding range||N, NW Europe||Non-breeding range||NW, Central Europe|
|Red List Category||Least Concern|
|Publication||Start year||End year||Minimum||Maximum||Estimate quality||Notes||References||Actions|
|WPE 5||1990||2000||1,000,000||1,300,000||Expert opinion||[R63]|
|CSR 4||1990||2000||1,000,000||1,300,000||Expert opinion||[R63]|
|CSR 5||1990||2000||1,000,000||1,300,000||Expert opinion||[R63]|
|CSR 6||1990||2012||1,000,000||1,300,000||Best guess||[S8565]||[R1365] [R1362] [R1361] [R63]|
|Publication||Start year||End year||Trend||Trend quality||Notes||References||Actions|
|CSR 6||2000||2012||DEC||Reasonable||[T6558]||[R1381] [R1362] [R1361] [R1480]|
Population 1% level
- R456 - Monval, J-Y. and Pirot, J-Y. 1989. Results of the IWRB International Waterfowl Census 1967-1986. IWRB Spec. Publ. No. 8. Slimbridge, UK.
- 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.
- R181 - Delany, S.N., Reyes, C. Hubert, E., Pihl, S., Rees, E., Haanstra, L., and van Strien, A. 1999. Results from the International Waterbird Census in the Western Palearctic and Southwest Asia 1995 and 1996.
- R63 - BirdLife International (2004)b. Birds in Europe, population estimates, trends and conservation status. Cambridge, UK: BirdLife International. (BirdLife Conservation Series No. 12).
- R692 - Wetlands International, International Waterbird Census, unpublished data, 2005. See: http://www.wetlands.org/listmenu.aspx?id=56f39008-f9a9-4569-92c1-a0457e95eeaf
- R888 - Wetlands International, 2012. Results of trend analysis undertaken for CSR5 2012, presented in Annex 4. http://www.unep-aewa.org/meetings/en/mop/mop5_docs/pdf/mop5_14_csr5.pdf
- R1365 - Wetlands International, International Waterbird Census, unpublished data, 2014.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.
- R1381 - Nagy, S., Flink, S., Langendoen, T. (2014) Waterbird trends 1988-2012: Results of trend analyses of data from the International Waterbird Census in the African-Eurasian Flyway. Wetlands International, Ede.
- R1480 - Christensen, T.K. & Fox, A.D. 2014. Changes in age and sex rations amongst samples of hunter-shot wings from common duck species in Denmark 1982-2010. European Journal of Wildlife Research 60:303-312.
- R887 - Wetlands International, 2006. Edited by Simon Delany and Derek Scott. Waterbird Population Estimates 4th edition. Wetlands International, Wageningen, The Netherlands
- 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
- S5691 - Earlier estimates, based on winter counts, were considerable under-estimates. 64: Breeding population in Europe estimated at 490,000-590,000 pairs (1,470,000-1,770,000 individuals), of which 200,000-210,000 pairs (600,000-630,000) individuals in Russia. One quarter of Russian breeders (150,000 individuals) assumed to belong to this population.
- T6166 - Wetlands International 2012. Trend 1983-2006: +1.5% p.a. ? Increase. However, increase has levelled off since the mid-late ?90s.
- T3774 - 898. Trend 1983-2006: +1.5% p.a. â€“ Increase. However, increase has levelled off from the mid-late â€˜90s.
- S8565 - The average annual IWC count total was 161,409 individuals during the period of 2008-2012. The sum of the 5-year means was 241,847 individuals during the same period. The total of the national estimates for wintering birds in IS, IE, UK, FR, CH, BE, NL, LU, DE, DK, AT, NO, SE, FI, EE, LV, LT, PL, CZ was 350,185-401,790 individuals. The sum of the national breeding population estimates in UK, NL, DE, DK, AT, NO, SE, FI, EE, LV, LT, PL is 287,782-401,116 pairs (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). According to Delany and Scott (2006), 25% of the estimated 200,000-210,000 pairs in RU (BirdLife International, 2004) can be also added to this population. This yields an estimate of 1,000,000-1,400,000 estimate, which is roughly the same as the existing estimate.
- T6558 - The trend analysis based on IWC data shows moderate increase in the long-term and moderate decrease in the short-term (Nagy et al, 2014). The overall trend derived form national trend estimates of wintering birds, also suggests an increasing population in the long-term (1980-2012: 1.0053-1.0111) but a stable population with more leaning towards decrease than increase in the short-term (2000-2012: 0.9893-1.0030). The overall trend for the breeding population (without its part in RU) is stable in the long-term (1980-2012: 0.9970-1.0057) and decreasing in the short-term (2000-2012: 0.9768-0.9965, European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). Christensen & Fox (2014) have showed statistically significant decline in the proportion of young birds in hunter-shot birds in Denmark, which indicates reduced reproductive success.
- S9065 - The annual count total was around 140,000-168,000 individuals between 2011-2015 (Wetlands International 2017), but Delany and Scott (2006) argued that wintering numbers represent a significant underestimation and breeding numbers should be used instead. The sum of the national breeding population estimates for UK, NL, DE, DK, AT, NO, SE, FI, EE, LV, LT, PL is 287,882-401,236 pairs (BirdLife International 2015). According to Delany and Scott (2006), 25% of the estimated 200,000-220,000 pairs in RU (BirdLife International, 2015) can be also added to this population. This yields an estimate of 990,000-1,370,000 individuals which is roughly the same as the existing estimate.
- T6965 - The IWC trend analysis indicates a stable trend in the short-term (Wetlands Inernational 2017). BirdLife International (2015) reports negative trends for the breeding populations. It also reports declines in wintering numbers on the SW edge of the range and increases in the NE one. The long-term trend is stable in breeding numbers and increase in wintering ones.
Copyright Wetlands International 2012 Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on