Population information

Order name Anseriformes
Family name Anatidae
Scientific name Radjah radjah Common name Radjah Shelduck
Population name rufitergum
Breeding range N Australia Non-breeding range
Red List Category Least Concern
Ramsar regions Oceania
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 3 1999 1999 150,000 150,000 [R249]
WPE 4 1999 1999 25,000 1,000,000 [S4911] [R249]
WPE 1 0 0 25,000 1,000,000 [R115]
WPE 2 0 0 25,000 1,000,000 [R115]
WPE 5 1988 1999 10,000 100,000 Best guess [S7089] [R267] [R1101] [R1131]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1972 1990 STA [R249]
WPE 4 1972 1990 STA [R249]
WPE 1 1980 1990 STA [R115]
WPE 2 1980 1990 STA [R115]
WPE 5 1990 1999 STA Poor [T5919] [R267]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 1500
WPE 4 0 -1
WPE 1 0 -1
WPE 2 0 -1
WPE 5 2012 1000

References

  • R249 - Garnett, S.T. and Crowley, G.M. 2000. The Action Plan for Australian Birds 2000. Environment Australia, Canberra.
  • R115 - Callaghan, D.A. and Green, A.J. 1993. Wildfowl at risk, 1993. Wildfowl 44: 149-169.
  • R267 - Green, A.J. 1992a. The status and conservation of the White-winged Wood Duck (Cairina scutulata). IWRB Special Publication No. 17. Slimbridge, UK. 115 pp.
  • R1101 - Jaensch, R. April 2012. Detailed data and notes on numbers and trends of waterbirds in Australia and other parts of the Oceania region, in a spreadsheet prepared for Wetlands International - Oceania for the 5th edition of WPE.
  • R1131 - Morton, S.R., Brennan, K.G. and Armstrong, M.D. 1989. Distribution and abundance of waterbirds in the Alligator Rivers Region, Northern Territory. Report to Australian National Parks and Wildlife Service, Canberra.

Notes

  • S4911 - 252 estimated 100,000 breeding adults (150,000 individuals). 344 suggests that population may be smaller.
  • S7089 - Estimate based on reassessment of information collated for WPE4, extrapolating numbers recorded in Alligator Rivers Region (1980s) to whole of the extensive range.
  • T5919 - No recent information accessed on trend but species does persist in developed E coast regions.



Copyright Wetlands International 2012

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