Population information

Order name Anseriformes
Family name Anatidae
Scientific name Thalassornis leuconotus Common name White-backed Duck
Population name insularis
Breeding range Madagascar Non-breeding range
Red List Category Least Concern
Ramsar regions Africa
Notes

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 1 10,000 [R266]
WPE 2 1990 1995 1 10,000 [R578]
WPE 3 0 0 2,500 5,000 [R727]
WPE 4 0 0 1,000 2,000 [R726]
WPE 5 0 0 1,000 2,000 [R726]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1981 1991 DEC [R266]
WPE 2 1981 1991 DEC [R266]
WPE 3 1986 1996 DEC [R578]
WPE 4 1986 1996 DEC [R578]
WPE 5 1986 1996 DEC [R578]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 1997 30
WPE 3 2002 40
WPE 4 2006 15
WPE 5 2012 15

References

  • R266 - Green, A. (pers. comm.). 1992. Unpublished personal observations of Madagascar waterbirds.
  • 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.
  • R727 - Young, Glyn, in litt., 2002. Durrell Wildlife Madagascar Project.
  • R726 - Young, Glyn, F. Hawkins and R. Safford. In litt. 2005.

Notes




Copyright Wetlands International 2012

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