Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Egretta picata Common name Pied Heron
Population name Australia - Sulawesi
Breeding range N Australia, New Guinea, S Sulawesi Non-breeding range
Red List Category Least Concern
Ramsar regions Asia Oceania
Notes Sometimes placed in genus Ardea.

Conservation Framework

Conservation framework Notes
EAAF Partnership
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 4 2003 2003 25,000 100,000 [S3736] [R341]
WPE 1 1987 1991 100,000 1,000,000 [R519]
WPE 2 1987 1991 100,000 1,000,000 [R519]
WPE 3 1987 1991 100,000 1,000,000 [R519]
WPE 5 1995 2002 25,000 100,000 Best guess [S7636] [R286] [R341] [R1027] [R1037]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 4 1990 2000 STA [T2326] [R341]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 3 0 0 Unknown
WPE 5 2000 2010 STA Poor [T5422] [R1101]

Population 1% level

Publication Yearset 1 percent Note
WPE 4 2006 1000
WPE 1 0 -1
WPE 2 0 -1
WPE 3 2002 10000
WPE 5 2012 1000

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,
  • R519 - Perennou, C.P., Mundkur, T. and Scott, D.A. 1994. The Asian Waterfowl Census 1987-1991: distribution and status of Asian waterfowl. IWRB Spec. Publ. No. 24; AWB Spec. Publ. No. 86. Slimbridge, UK and Kuala Lumpur, Malaysia.
  • R286 - Halse, S.A., Pearson, G.B., Jaensch, R.P., Kulmoi, P., Gregory, P., Kay, W.R. and Storey, A.W. 1996. Waterbird surveys of the Middle Fly River floodplain, Papua New Guinea. Wildlife Research 23 (5): 557-569. (CSIRO Publishing, Australia).
  • R1027 - Bishop, K.D. 2003. A Review of the Avifauna of the TransFly Eco-region: the status, distribution, habitats and conservation of the region?s birds. Report to WWF South Pacific Program.
  • R1037 - Chatto, R. 2000. Waterbird breeding colonies in the Top End of the Northern Territory. Technical Report 69, Parks and Wildlife Commission of the Northern Territory, Australia.
  • 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

  • S3736 - 344: Population in Australia estimated to be 25,000 - 100,000. 205: Non-Australian population much smaller than Australian population. 289: Large numbers [22,000] estimated southern New Guinea but not known if were migrants from Australia.
  • T2326 - Trend only relates to Australia.
  • S7636 - Estimate based on high counts in S New Guinea, and numbers breeding in far N Australia, which although not necessarily additive nevertheless suggest overall numbers in the range 25,000-100,000..
  • T5422 - Trend assumed stable based on habitat in Australia and New Guinea being mostly near-natural.



Copyright Wetlands International 2012

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