Population information

Order name Anseriformes
Family name Anatidae
Scientific name Tadorna ferruginea Common name Ruddy Shelduck
Population name Western Asia & Caspian/Iran & Iraq
Breeding range W Asia, Caspian, Iran, Iraq Non-breeding range
Red List Category Least Concern
Ramsar regions Asia Europe
Notes

Conservation Framework

Conservation framework Notes
AEWA
CAF Action Plan
EUBD
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 1987 1991 25,000 100,000 [R519]
WPE 2 1990 1995 35,000 35,000 [R578]
WPE 3 0 0 50,000 50,000 [R257]
WPE 4 0 0 50,000 50,000 [R257]
WPE 5 1997 1999 50,000 50,000 Expert opinion [R257]
CSR 4 1997 1999 50,000 50,000 Expert opinion [R257]
CSR 5 1997 1999 50,000 50,000 Expert opinion [R257]
CSR 6 2003 2012 50,000 50,000 Best guess [S8521] [R257] [R1365]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1977 1991 INC [R519]
WPE 2 1977 1991 INC [R519]
WPE 3 1977 1991 INC [R519]
WPE 4 1977 1991 INC [R519]
WPE 5 1997 2007 Unknown No idea [T5905]
CSR 4 1987 1991 INC Poor
CSR 5 1997 2007 Unknown Poor [T3142] [R888]
CSR 6 2003 2012 UNC Poor [T6517] [R1381]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 1997 350
WPE 3 2002 500
WPE 4 2006 500
WPE 5 2012 500
CSR 4 0 -1
CSR 5 0 -1
CSR 6 0 -1

References

  • R519 - Perennou, C.P., Mundkur, T. and Scott, D.A. 1994. The Asian Waterfowl Census 1987-1991: distribution and status of Asian waterfowl. IWRB Spec. Publ. No. 24; AWB Spec. Publ. No. 86. Slimbridge, UK and Kuala Lumpur, Malaysia.
  • 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.
  • R257 - Gilissen, N., Haanstra, L. and Delany, S. Boere, G. and Hagemeijer, W. 2002. Numbers and Distribution of Wintering Waterbirds in the Western Palearctic and Southwest Asia in 1997, 1998 and 1999 - Results from the International Waterbird Census. Wetlands International Globale Series No. 11, Wageningen, The Netherlands
  • 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  • R1365 - Wetlands International, International Waterbird Census, unpublished data, 2014.
  • 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.
  • R1569 - Sheldon, R. 2017. Estimates of breeding waterbird populations in Central/SW Asia, The Caucasus and the Arabian Peninsula.
  • R1589 - Cuthbert, R. & Aarvak, T. (Compilers) 2016. Population Estimates and Survey Methods for Migratory Goose Species in Northern Kazakhstan. AEWA Lesser White-fronted Goose International Working Group Report Series No. 5. Bonn, Germany. 96pp. URL: http://www.unep-aewa.org/sites/default/files/publication/lwfg_report_no5_final.pdf
  • 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

  • T5905 - Wetlands International 2012. Trend 1990-2007: -9.0% ? Significant long-term decline, but only 100 sites included in analysis, 80 of them in one country, Iran, leading to biased analysis.
  • T3142 - 898. Trend 1990-2007: -9.0% – Significant long-term decline, but only 100 sites included in analysis, 80 of them in one country, Iran, leading to biased analysis.
  • S8521 - Site coverage is highly inconsistent in this region. Sum of site level 5-year means of IWC count was 24,519 individuals for 2008-2012, but maximum of the annual count totals was only 12,629 individuals in 2012. A higher count of 13,839 individuals came from 2013.
  • T6517 - IWC trend analysis resulted in and uncertain (0.9546±0.0318 ) trend for 2003-2012, but showing significant long-term decline (0.9426±0.093) for the period of 1998-2013. However, results should be treated with caution because of high level of imputing for missing counts (Nagy et al., 2014).
  • S8920 - See CSR6 and Sheldon (2017). Cuthbert and Aarvak (2016) reported 53,000 individuals from Kazakhstan alone.
  • T6904 - The long-term trend shows a fluctuating pattern either due to genuine population changes or due to insufficient coverage.



Copyright Wetlands International 2012

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