Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Oxyura australis Nom courant Blue-billed Duck
Nom population SW Australia
Aire de reproduction SW Australia Aire de non-reproduction W & SW Australia
Catégorie de la Liste Rouge Near Threatened
Regions Ramsar Oceania
Notes These populations were treated as a single larger population WPE1. (WPE2)

Réseau de conservation

Réseau de conservation Notes
Pas des Réseaux de conservation
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 4 2003 2003 5,000 5,000 [R341]
WPE 2 0 0 -1 -1
WPE 3 0 0 -1 -1
WPE 5 1981 2010 5,000 5,000 Expert opinion [S7510] [R287] [R341] [R1104] [R1146]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 4 1990 2000 DEC [R341]
WPE 2 0 0 Unknown
WPE 3 0 0 Unknown
WPE 5 1981 2010 DEC Poor [R1117] [R341]

Population 1% level

Publication Yearset 1 percent Note
WPE 4 2006 50
WPE 2 0 -1
WPE 3 0 -1
WPE 5 2012 50

References

  • R341 - Jaensch, Roger, August 2005. Detailed data and notes on numbers and distribution of waterbirds in Australia, updated from Jaensch, 2003, and derived from more than 90 Australian sources including Wetlands International, Birds Australia and Jaensch, 2003,
  • R287 - Halse, S.A., Vervest, R.M., Munro, D.R., Pearson, G.B. and Yung, F.H., 1992. Annual waterfowl counts in south-western Australia - 1989/90. Technical Report 29, Western Australian Department of Conservation and Land Management.
  • R1104 - Jaensch, R.P., Vervest, R.M. and Hewish, M.J. 1988. Waterbirds in nature reserves of south-western Australia, 1981-1985: reserve accounts. Report 30, Royal Australasian Ornithologists Union.
  • R1146 - Pinder, A. In litt. 4 April 2012b (waterbird monitoring database for 25 wetlands across south-western Australia, 1997-2010, Department of Environment and Conservation, Western Australia).
  • R1117 - Lane, J.A.K., Clarke, A.G., Pearson, G.B. and Winchcombe, Y.C. 2007. Waterbirds of the Vasse-Wonnerup wetlands in 1998-2000, including Ramsar status and comparisons with earlier data. Western Australian Department of Environment and Conservation, Busselton.

Notes

  • S7510 - Estimate of WPE4 is retained due to lack of survey data and thus insufficient information for a meaningful reassessment.



Copyright Wetlands International 2012

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