Population information

Order name Anseriformes
Family name Anatidae
Scientific name Anas castanea Common name Chestnut Teal
Population name SW Australia
Breeding range SW Australia Non-breeding range
Red List Category Least Concern
Ramsar regions Oceania
Notes In WPE2 this population belonged to one single population (S Australia/Tasmania).

Conservation Framework

Conservation framework Notes
No conservation frameworks

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 4 2003 2003 5,000 5,000 [R341]
WPE 3 0 0 -1 -1
WPE 5 1989 2011 5,000 5,000 Expert opinion [S8037] [R287] [R341] [R1145]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 4 1990 2000 STA [R341]
WPE 3 0 0 Unknown
WPE 5 1982 2011 STA Reasonable [T6044] [R341]

Population 1% level

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


  • 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.
  • R1145 - Pinder, A. In litt. 4 April 2012a (waterbird monitoring database for Lake Warden and Lake Gore systems, 2006-2012, Department of Environment and Conservation, Western Australia).


  • S8037 - Numbers well documented in 1980s to early 1990s but region-wide surveys not continued. Occurs in saline near-coastal wetlands; recent sub-regional counts occasionally exceed 1,000 birds. No change to WPE4 estimate or trend.
  • T6044 - No change to WPE4 estimate or trend.

Copyright Wetlands International 2012

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