Population information

Order name Anseriformes
Family name Anatidae
Scientific name Dendrocygna viduata Common name White-faced Whistling-duck
Population name West Africa (Senegal to Chad)
Breeding range W Africa: Senegal to Chad & CAR Non-breeding range
Red List Category Least Concern
Ramsar regions Africa
Notes These populations were treated as a single larger population WPE1. (WPE2)

Conservation Framework

Conservation framework Notes
AEWA
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 2 0 0 250,000 250,000 [R517]
WPE 3 2001 2001 250,000 500,000 [R190]
WPE 4 0 0 600,000 700,000 [S2890] [R642]
WPE 1 0 0 -1 -1
WPE 5 1999 2000 600,000 700,000 Expert opinion [S7486] [R910]
CSR 4 1999 2000 600,000 700,000 Expert opinion [R642]
CSR 5 1999 2000 600,000 700,000 Expert opinion [S2892] [R910]
CSR 6 1999 2008 600,000 700,000 Expert opinion [S8678] [R642] [R648]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1986 1996 INC [R578]
WPE 3 1986 1996 INC [R578]
WPE 4 1986 1996 INC [R578]
WPE 1 0 0 Unknown
WPE 5 1986 1996 INC Poor [R872] [R910]
CSR 4 1986 1996 INC Poor
CSR 5 1986 1996 INC Poor [R872] [R910]
CSR 6 2003 2012 UNC Poor [T6659] [R1381] [R1371]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 1997 2500
WPE 3 2002 3800
WPE 4 2006 6500
WPE 1 0 -1
WPE 5 2012 6500
CSR 4 0 -1
CSR 5 0 -1

References

  • R517 - Perennou, C. 1991. Les recensements internationaux d'oiseaux d'eau en Afrique Tropicale. IWRB Spec. Publ. No. 15. Slimbridge, UK. 140 pp.
  • 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.
  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • R642 - Trolliet, B. and Girard, O. (2004). Anatid numbers and distribution in West Africa in winter. Abstracts of the Waterbirds Around the World Conference, Edinburgh, UK, April 2004, p. 299.
  • R910 - Trolliet, B. in litt 2011
  • R872 - Trolliet, B, Girard, O, Benmergui, M., Schricke, V. and Triplet, P. 2007. Oiseaux d?eau en Afrique subsaharienne?: Bilan des d?nombrements de janvier 2006. faune sauvage n? 275/f?vrier 2007?: 4-12.
  • R648 - Trolliet, B., in litt., 2006.
  • 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.
  • 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

  • S2890 - 650, 189: 526,000 counted in Jan 2000, of which 415,000 in co-ordinated aerial surveys of Sahel zone from Atlantic to Chad Basin; 650 estimate 595,000. Additional estimate for uncounted region from S Senegal - Nigeria, Cameroon & CAR 75,000-175,000 (See 198 for details).
  • S7486 - Trolliet, B. In litt. 2011.. Numbers counted simultaneously in West Africa exceeded 400,000 in 2008.
  • S2892 - 920. Numbers counted simultaneously in West Africa exceeded 400,000 in 2008.
  • S8678 - Trolliet, B. In litt. 2011.. Numbers counted simultaneously in West Africa exceeded 400,000 in 2008.
  • T6659 - IWC data confirms large increase up to 2001. However, uncertain/fluctuating trend in recent years (Nagy et al., 2014).
  • T6868 - Long-term trend is stable.



Copyright Wetlands International 2012

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