Population information

Order name Anseriformes
Family name Anatidae
Scientific name Tadorna tadorna Common name Common Shelduck
Population name North-west Europe
Breeding range NW Europe Non-breeding range W Europe
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 0 250,000 250,000 [R456]
WPE 2 1990 1995 300,000 300,000 [R578]
WPE 3 1990 1995 300,000 300,000 [R578]
WPE 4 1990 1995 300,000 300,000 [R578]
WPE 5 1990 1995 300,000 300,000 Census based [R578]
CSR 5 1990 1995 300,000 300,000 Census based [R578]
CSR 4 1990 1995 300,000 300,000 Census based [R578]
CSR 6 2008 2012 250,000 250,000 Census based [S8263] [R1349] [R1362] [R1361]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1967 1986 INC [R456]
WPE 2 1969 1994 INC [R578]
WPE 3 1987 1996 STA [R181]
WPE 4 1987 1996 STA [R181]
WPE 5 1997 2007 INC Reasonable [T5913] [R63] [R888]
CSR 5 1997 2007 INC Reasonable [T3159] [R63] [R888]
CSR 4 0 0 STA Reasonable
CSR 6 2003 2012 DEC Reasonable [T6263] [R1349] [R1350] [R1381] [R1362] [R1361] [R1546]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 2500
WPE 2 1997 3000
WPE 3 2002 3000
WPE 4 2006 3000
WPE 5 2012 3000
CSR 5 0 -1
CSR 4 0 -1
CSR 6 0 -1

References

  • 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).
  • 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
  • R1349 - Laursen, K., Blew, J., Eskildsen, K., Günther, K., Hälterlein, B., Kleefstra, R., Lüerßen, G., Potel, P., Schrader, S. 2010. Migratory Waterbirds in the Wadden Sea 1987- 2008. Wadden Sea Ecosystem No.30. Common Wadden Sea Secretariat, Joint Monitoring Group of Migratory Birds in the Wadden Sea, Wilhelmshaven, Germany.
  • 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.
  • R1350 - Austin, G.E., Read, W.J., Calbrade, N.A., Mellan, H.J., Musgrove, A.J., Skellorn, W., Hearn, R.D., Stroud, D.A., Wotton, S.R. and Holt, C.A. 2014. Waterbirds in the UK 2011/12: The Wetland Bird Survey. BTO/RSPB/JNCC. Thetfordhttp://www.bto.org/volunteer-surveys/webs/publications/webs-annual-report
  • 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.
  • R1546 - van Roomen M., Nagy S., Foppen R., Dodman T., Citegetse G. & Ndiaye A. (in prep). Status of coastal waterbird populations in the East Atlantic Flyway. Programme Rich Wadden Sea, Leeuwarden, The Netherlands, Sovon, Nijmegen, The Netherlands, Wetlands International, Wageningen, The Netherlands, BirdLife International, Cambridge, United Kingdom &, Wadden Sea Secretariat, Wilhelmshaven, Germany.
  • 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

Notes

  • T5913 - Wetlands International 2012. Trend 1983-2007: +0.7% p.a. ? Increase. BirdLife International 2004b: Decreased in Sweden and the UK, increased in Belgium and Germany and a number of smaller populations between 1990 and 2000. Overall at least stable.
  • T3159 - 898. Trend 1983-2007: +0.7% p.a. – Increase. 64: Decreased in Sweden and the UK, increased in Belgium and Germany and a number of smaller populations between 1990 and 2000. Overall at least stable.
  • S8263 - National estimates of breeding populations add up to 41,471-54,110 pairs (i.e. 124,413-162,330 individuals) in BE, DE, DK, EE, FI, FR, IE, IS, LT, LV, NL, NO, PL, SE, UK and adding 10% of the Russian breeding population. The total of national wintering numbers reported in the same processes from the same countries add up to 303,039-310,338 individuals. However, this probably represents some double counting as national count totals from the period of 2000 and 2012 ranged between only 180,208 (2010) and 278,323 (2004) with a five-year mean of 207,181 individuals for the period of 2008-2012. Allowing for missing counts through imputing, the five year mean for the same period is 251,155 individuals. With rounding this leads to the current estimate of 250,000 individuals.
  • T6263 - IWC trend analysis (Nagy et al. 2014) suggest stable or moderately declining population trend (1988-2012: -0.19% p.a., 2003-2012: -0.87% p.a.). This is consistent with the declining trend reported from the UK and with the decline from the mid-90s in the Wadden Sea and also with the stable/fluctuating trend with a statistically not significant tendency towards decline found by van Roomen et al. (in prep) However, it contradicts the 13-14% short-term increase reported for the breeding numbers (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.).



Copyright Wetlands International 2012

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