|Scientific name||Podiceps cristatus||Common name||Great Crested Grebe|
|Population name||cristatus, North-west & Western Europe|
|Breeding range||N & W Europe west of and including Scandinavia, Germany, Switzerland, Italy||Non-breeding range|
|Red List Category||Least Concern|
|Publication||Start year||End year||Minimum||Maximum||Estimate quality||Notes||References||Actions|
|WPE 2||1987||1991||150,000||150,000||No quality assessment||[R497]|
|WPE 3||0||0||370,000||580,000||No quality assessment||[R579]|
|WPE 1||1993||1993||100,000||1,000,000||No quality assessment||[R665]|
|WPE 4||1990||2000||290,000||420,000||No quality assessment||[S3119]||[R63]|
|WPE 5||1990||2000||290,000||420,000||Expert opinion||[R63]|
|CSR 4||1990||2000||290,000||420,000||Expert opinion||[R63]|
|CSR 5||1990||2000||290,000||420,000||Expert opinion||[R63]|
|CSR 6||2000||2012||500,000||745,000||Expert opinion||[S8456]||[R63] [R1362] [R1361]|
|CSR 7||2000||2012||513,000||764,000||Expert opinion||[S8827]||[R1549]|
|Publication||Start year||End year||Trend||Trend quality||Notes||References||Actions|
|WPE 2||1974||1993||INC||No quality assessment||[R497]|
|WPE 3||1974||1993||INC||No quality assessment||[R497]|
|WPE 1||1982||1992||INC||No quality assessment||[R665]|
|WPE 4||1990||2000||DEC||No quality assessment||[T1905]||[R63]|
|WPE 5||1997||2007||DEC?||No idea||[T3929]||[R63] [R888]|
|CSR 4||1990||2000||DEC?||No idea||[T1904]||[R904]|
|CSR 5||1997||2007||DEC?||Poor||[T1906]||[R63] [R888]|
|CSR 6||2000||2012||DEC||Reasonable||[T6454]||[R1381] [R1382] [R1362] [R1361]|
|CSR 7||2006||2015||STA/DEC?||Reasonable||[T6783]||[R1548] [R1549] [R1551]|
Population 1% level
|WPE 1||-1||-1||Not Set|
|CSR 4||-1||-1||Not Set|
|CSR 5||-1||-1||Not Set|
|CSR 6||-1||-1||Not Set|
- R497 - O'Donnel, C.F.J. and Fjelds?, J. 1995. Grebes: a global action plan for their conservation. IUCN.
- R579 - Scott, D.A. in press, 2002. Report on the Conservation Status of Migratory Waterbirds in the Agreement Area. Update Report to African Eurasian Migratory Waterbird Agreement Secretariat
- R665 - Unpublished information provided by IWRB Specialist Research Groups
- 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
- R904 - Wetlands International. November 2007. Unpublished population trend analysis based on the IWC database of January counts in Europe using TRIM software.
- 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.
- R1382 - EBCC, RSPB, BirdLife International & Statistics Netherlands. 2014. Trends of common birds in Europe, 2014 update. URL: http://www.ebcc.info/index.php?ID=557
- 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. URL: http://iwc.wetlands.org/index.php/aewatrends
- R1551 - EBCC, RSPB, BirdLife International & Statistics Netherlands. 2016. Trends of common birds in Europe, 2016 update. URL: http://www.ebcc.info/index.php?ID=612
- S3119 - 64: Breeding population in relevant countries 97,365-140,320 pairs (292,095-420,960 individuals).
- T1905 - Winter counts decreasing in NW Europe since 1996, in Central Europe since before 1990s (700).
- T3929 - Wetlands International 2012. Trend 1983-2007: +3.2% p.a. ? Increase. Increase mostly 1983-1994; population stable or decreasing since mid 1990s. BirdLife International 2004b. Decreasing since 1990s, but earlier increases outweigh recent decrease.
- T1904 - 914. Increasing in Baltic, decreasing in Central Europe, Stable in NW Europe.
- T1906 - 898. Trend 1983-2007: +3.2% p.a. â€“ Increase. Increase mostly 1983-1994; population stable or decreasing since mid 1990s. / 64. Decreasing since 1990s, but earlier increases outweigh recent decrease.
- S8456 - Unadjusted IWC count totals ranged between 115,663 (2012, with counts from Germany missing) and 162,353 individuals (2005) with an average of 140,540 individuals for the ten-year period of 2003-2012. However, totals adjusted for missing counts ranged between 144,716 (2003) and 193,947 individuals (2005). The adjusted figures show good agreement with the totals of the figures reported to the EU Birds Directive Art. 12 reporting process, i.e. 179,380-195,372 individuals although they do not yet include numbers from CH, DK, EE, LT and SE. However, winter counts apparently miss a large number of birds because the estimated breeding numbers for AT, BE, DE, DK, EE, ES, FI, FR, IE, IT, LT, LU, LV, NL, PL, PT, SE and the UK is 160,475-236,976 pairs from the EU Birds Directive Art. 12 reports. However, estimates for CH, CZ and NO were not yet available at the time of writing. Based on BirdLife International (2004), there are and additional 7,250-10,900 pairs in these countries. Thus, the total number of individuals in this population should be around 500,000-745,000.
- T6454 - The large long-term and the moderate medium-term increase shown in the IWC data (Nagy et al. 2014) contradicts the moderate decline reported by the Pan-European Common Bird Monitoring Scheme for largely the same countries for 1990-2012 (EBCC et al., 2014). The IWC trends also contradict the results of the EU Birds Directive Art. 12 reporting process, which reported an overall decrease (0.9657-0.9916) for breeding birds for 2000-2012. However, the short-term trend is within the range given for wintering birds (0.9732-1.0117) and roughly agrees with the long-term trend (1.0101-1.0165). The possible explanation for this is that the population has rapidly increased between 2003 and 2005, but started slowly decreasing again after that. As the breeding trends are less sensitive to range shifts and weather related movements, the trend based on the breeding population is used to describe the overall trend in the population.
- S8827 - 171,000-254,603 pairs in AT, BE, CH, CZ, DK, EE, ES, FR, IE, IT, LT, LU, LV, NL, NO, PL, PT, SE and UK (BirdLife International 2015).
- T6783 - Following a long-term increase both in the breeding and wintering numbers, the population appears to be stable or slowly declining in the short-term (Wetlands International 2017, BirdLife International 2015, EBCC et al. 2016).
Copyright Wetlands International 2012 Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on