Population information

Order name Anseriformes
Family name Anatidae
Scientific name Tadorna ferruginea Common name Ruddy Shelduck
Population name North-west Africa
Breeding range NW Africa Non-breeding range
Red List Category Least Concern
Ramsar regions Africa
Notes

Conservation Framework

Conservation framework Notes
AEWA
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 1,500 1,500 [R456]
WPE 2 1990 1995 2,500 2,500 [R578]
WPE 3 0 0 3,000 3,000 [R273]
WPE 4 0 0 3,000 3,000 [R273]
WPE 5 1989 1999 3,000 3,000 Expert opinion [R273]
CSR 4 1989 1999 3,000 3,000 Expert opinion [R273]
CSR 5 1989 1999 3,000 3,000 Expert opinion [R273]
CSR 6 2010 2013 6,000 8,000 Expert opinion [S8681] [R1371]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1967 1986 DEC [R456]
WPE 2 1967 1986 DEC [R456]
WPE 3 1978 1999 DEC [R273]
WPE 4 1978 1999 DEC [R273]
WPE 5 1989 1999 DEC Poor [R273]
CSR 4 1989 1999 DEC Poor [R273]
CSR 5 1989 1999 DEC Poor [R273]
CSR 6 2003 2013 INC? Poor [R1371]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 15
WPE 2 1997 25
WPE 3 2002 30
WPE 4 2006 30
WPE 5 2012 30
CSR 4 0 -1
CSR 5 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.
  • R273 - Green, A.J., El Hamzaoui, M., El Agbani, M.A., and Franchimont, J. 2002. The conservation Status of Moroccan wetlands with particular reference to waterbirds and to changes since 1978. Biological Conservation 104:71-82.
  • R1371 - Dodman, T. 2014. Status, Estimates and Trends of Waterbird Populations in Africa: AEWA-listed African populations. Wetlands International. (CSR6 African populations) URL: https://www.wetlands.org/publications/1304/
  • 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

  • S8681 - Review of more recent info supports estimate of 2002.
  • S8891 - Current count totals exceed the maximum estimate. New estimate is based on the WPE estimate and using the annual growth rate from the trend analysis. It shows a good fit with interim estimates.



Copyright Wetlands International 2012

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