Population information

Order name Podicipediformes
Family name Podicipedidae
Scientific name Poliocephalus poliocephalus Common name Hoary-headed Grebe
Population name Australia, New Zealand
Breeding range Australia, some S Island New Zealand 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 1 0 0 100,000 1,000,000 [R236]
WPE 2 0 0 500,000 500,000 [R236]
WPE 3 0 0 500,000 500,000 [R236]
WPE 4 2003 2003 25,000 1,000,000 [S3079] [R341]
WPE 5 1997 2011 25,000 1,000,000 Best guess [S7546] [R236] [R341] [R1101]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1975 1985 STA [R236]
WPE 2 1975 1985 STA [R236]
WPE 3 1975 1985 STA [R236]
WPE 4 1995 2005 FLU [R341]
WPE 5 1982 2011 FLU Poor [R1101]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 1997 5000
WPE 3 2002 5000
WPE 4 0 -1
WPE 5 2012 10000

References

  • R236 - Fjelds?, J. 1988. Comparative ecology of Australian grebes (Aves: Podicipedidae). RAOU Report 54: 1-30. Royal Australian Ornithological Union, Victoria.
  • 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,
  • 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.

Notes

  • S3079 - Thought to have colonised NZ following exceptionally wet years in Australia; now few birds occur in NZ and no longer breeds there (432).
  • S7546 - Data remain inadequate for developing a numerical estimate because of detection difficulties in aerial surveys; numbers probably fluctuate naturally across two estimate classes.



Copyright Wetlands International 2012

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