|Scientific name||Anas crecca||Common name||Common Teal|
|Population name||crecca, North-west Europe|
|Breeding range||North & NW Europe||Non-breeding range||NW Europe|
|Red List Category||Least Concern|
|Publication||Start year||End year||Minimum||Maximum||Estimate quality||Notes||References||Actions|
|WPE 5||2005||2005||500,000||500,000||Expert opinion||[R692]|
|CSR 4||2005||2005||500,000||500,000||Expert opinion||[R692]|
|CSR 5||2005||2005||500,000||500,000||Expert opinion||[R692]|
|CSR 6||2008||2012||500,000||500,000||Census based||[S8363]||[R456] [R578] [R1365] [R1362] [R1361] [R63]|
|CSR 7||2008||2012||500,000||500,000||Census based||[S8896]||[R1549] [R1548]|
|Publication||Start year||End year||Trend||Trend quality||Notes||References||Actions|
|CSR 6||2003||2012||FLU||Reasonable||[T6363]||[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.
- R692 - Wetlands International, International Waterbird Census, unpublished data, 2005. See: http://www.wetlands.org/listmenu.aspx?id=56f39008-f9a9-4569-92c1-a0457e95eeaf
- 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.
- 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- R1365 - Wetlands International, International Waterbird Census, unpublished data, 2014.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.
- R63 - BirdLife International (2004)b. Birds in Europe, population estimates, trends and conservation status. Cambridge, UK: BirdLife International. (BirdLife Conservation Series No. 12).
- 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.
- R1549 - BirdLife International 2015. European Red List of Birds. Luxembourg: Office for Official Publications of the European Communities. http://datazone.birdlife.org/info/euroredlist
- 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
- T1053 - 700: Both long-term (1974-2002) and medium-term (1993-2002) trends increasing.
- T4342 - Wetlands International 2012. Trend 1983-2007: +2.5% p.a. ? Increase.
- T1056 - 898. Trend 1983-2007: +2.5% p.a. â€“ Increase.
- S8363 - Current population estimates are based on IWC counts in the early 2000s, which is 100,000 higher than of the estimate of (Monval & Pirot, 1989) maintained by Scott & Rose (1996). During 2008-2012, the average annual IWC count total was 344,397 individuals with a peak count of 439,373 individuals in 2012 (Wetlands International, 2014). The sum of the national wintering population estimates for IE, UK, FR (80%), BE, NL, LU, DE, DK, ES, CH and PL was 480,491-525,792 individuals in varying periods of five years between 2000 and 2012 (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). The breeding population of N Europe without NW RU, IS and NO was 225,531-417,746 pairs in nationally varying periods between 1988 and 2012 (European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.) Further 33,000-55,000 pairs were reported from NO and IS (BirdLife International, 2004). This yields an estimate of 775,000-1,400,000 after rounding, which is much higher than what can be expected based on wintering birds. Considering the uncertainties in estimating breeding populations of ducks, the estimate of 500,000 individuals was retained as a conservative estimate based on non-breeding numbers.
- T6363 - The long-term trend based on the IWC data (Nagy et al., 2014) agrees well with the overall long-term trend based on national trends for wintering birds (1980-2012: 1.0054-1.0117), but the short-term moderate decline contradicts the increasing overall trend derived from national trends (2000-2012: 1.0052-1.0200). There was only one country, the BE, with declining trend, while the UK, FR, ES and CH reported increase, IE stable, and NL, LU and DK fluctuating trends. The overall trend derived from the national estimates for breeding numbers in the EU Members States mentioned below indicate a fluctuating population both in the short- and the long-term (2000-2012: 0.9898-1.0027, 1980-2012: 0.9728-1.0115, European Topic Centre on Biological Diversity, in prep., BirdLife International et al., in prep.). Christensen &Â Fox (2014) found also no significant decline in proportion of young birds.
- S8896 - During 2011-2015, the average annual IWC count total ranged between 343,000 and 427,000. The sum of the national wintering population estimates for IE, UK, FR (80%), BE, NL, LU, DE, DK, ES, CH was 484,472-532,658 individuals in varying periods of five years between 2000 and 2012 (BirdLife International 2015). An additional 1,000-5,000 individuals are reported from PL during the period of 2011-2015 (Wetlands International 2017), which includes the current point estimate. Therfore, it is retained.
Copyright Wetlands International 2012 Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on