Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Botaurus poiciloptilus Common name Australasian Bittern
Population name SW Australia
Breeding range SW Australia Non-breeding range
Red List Category Endangered
Ramsar regions Oceania
Notes This species was included as one population in the first edition and has now been divided into 4 smaller populations. (WPE2)

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 0 0 500 500 [R353]
WPE 4 1993 1993 500 500 [S4094] [R138]
WPE 1 0 0 -1 -1
WPE 2 1993 1993 1 300 [R138]
WPE 5 2009 2010 60 230 Census based [S7825] [R1026]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1979 2000 DEC [R68]
WPE 4 2001 2005 DEC [R64]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 2000 2010 DEC Reasonable [T5468] [R1144] [R1076]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 5
WPE 4 2006 5
WPE 1 0 -1
WPE 2 1997 3
WPE 5 2012 1

References

  • R353 - Kalas, J.A. 2002. International Action Plan for the Great Snipe, Gallinago media (Latham 1787). BirdLife International. In review.
  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R138 - Collar, N.J., Crosby, M.J. and Stattersfield, A.J. 1994. Birds to Watch 2. The World List of Threatened Birds. BirdLife Conservation series No. 4. BirdLife International, Cambridge, UK. 407 pp.
  • R64 - BirdLife International. 2005. Threatened birds of the world 2005. Species factsheets available at?www.birdlife.org
  • R1026 - Birds Australia. 2012. Bittern Survey (2009-10). Online http://www.birdsaustralia.com.au/our-projects/bittern-survey.html accessed April 2012.
  • R1144 - Pickering, R. and Gole, C. 2008. Swan coastal plain Australasian Bittern surveys 2007-2008. Report to Birds Australia, Perth.
  • R1076 - Garnett, S.T., Szabo, J.K. and Dutson, G. 2010. The Action Plan for Australian Birds 2010. CSIRO Publishing, Melbourne.

Notes

  • S4094 - 65 estimates 2,500 for both populations, mostly in SE Australia. Proportion of populations in SW and SE Australia assume a similar ratio to that presented in 1139.
  • S7825 - Estimate derived by WPE method of number of mature birds x1.5 and based on systematic range-wide surveys in recent years coordinated by BirdLife Australia.
  • T5468 - Trend is declining (20-30% within 2 generations (11 years)) due to loss of habitat.



Copyright Wetlands International 2012

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