email a friend
printable version
Location Australia, Western Australia
Central coordinates 119o 31.31' East  33o 14.17' South
IBA criteria A1, A3
Area 75,855 ha
Altitude 310 - 400m
Year of IBA assessment 2009

BirdLife Australia

Summary This large IBA supports populations of the endangered Carnaby's Black-Cockatoo, the vulnerable Malleefowl and six species restricted to the mallee and south-western biome.

Site description The IBA is defined by the remnant vegetation associated with Dunn Rock, Lake King and Pallarup Nature Reserves and adjacent unallocated Crown Land. It is situated in the southern Western Australia wheatbelt, about 250 km north-east of Albany. The IBA was identified from expert opinion that it supports a significant viable population of Malleefowl, as determined by records in relevant databases (notably the Malleefowl Preservation Group database of 1200 sightings over 15 years, WA Dept of Environment and Conservation, WA Museum and Birds Australia Atlas), and other literature and knowledge, that population viability is greatest within large areas of contiguous mallee or Acacia shrubland. The IBA excludes the Lake King complex of lakes and wetland habitat which is unsuitable for mallee birds. It represents core habitat for the Malleefowl as it contains a large amount of dense mallee favoured by the species. The area represents one of the largest remaining mallee remnants within the wheatbelt and contains vegetation assemblages that have largely been cleared elsewhere, and typically receives around 400 mm of rain per year. The site consists primarily of mallee, mallee-heath and salt pans, with small amounts of woodland.

Key Biodiversity Other birds have not been documented for this IBA.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Malleefowl Leipoa ocellata resident  frequent  A1  Vulnerable 
Western Rosella Platycercus icterotis resident  1998-2008  uncommon  A3  Least Concern 
Red-capped Parrot Purpureicephalus spurius resident  1998-2008  uncommon  A3  Least Concern 
Regent Parrot Polytelis anthopeplus resident  1998-2008  uncommon  A3  Least Concern 
Blue-breasted Fairywren Malurus pulcherrimus resident  1998-2008  common  A3  Least Concern 
Purple-gaped Honeyeater Lichenostomus cratitius resident  1998-2008  frequent  A3  Least Concern 
Western Yellow Robin Eopsaltria griseogularis resident  1998-2008  uncommon  A3  Least Concern 
Short-billed Black-cockatoo Zanda latirostris breeding  1998-2008  frequent  A1, A3  Endangered 

IBA Monitoring

2008 high not assessed not assessed
Good - based on reliable and complete / representative data

Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - named species happening now majority/most of area/population (50-90%) no or imperceptible deterioration low
Natural system modifications fire & fire suppression - increase in fire frequency/intensity happening now majority/most of area/population (50-90%) slow but significant deterioration high

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Dunn Rock Nature Reserve 27,349 protected area contained by site 27,349  
Lake King Nature Reserve 40,096 protected area overlaps with site 18,674  
Pallarup Nature Reserve 4,185 protected area contained by site 4,189  
Un-named (No. 20349) Nature Reserve 1,770 protected area contained by site 1,770  


IUCN habitat Habitat detail Extent (% of site)
Savanna Eucalypt open woodlands  5%
Shrubland Heath; Mallee shrublands & woodlands  80%
Wetlands (inland) Saline lakes  15%

Land ownership Western Australian State Government with the nature reserves and the unallocated Crown Land managed by WA Dept of Environment and Conservation, although the unallocated Crown Land is not formally listed.

Land use

Land-use Extent (% of site)
nature conservation and research 70%
Notes: Nature Reserve.
not utilised 30%
Notes: Unallocated Crown Land.

Protection status Four - see separate section for details.

Access/Land-Owner requests Permits are required for access to Dunn Rock, Lake King and Pallarup Nature Reserves.

Acknowledgements Thanks to Blair Parsons for writing the nomination and to Carl Gosper for his assistance.

References Barrett, G.W., Silcocks,A., Barry, S., Cunningham, R. and Poulter, R. (2003) The New Atlas of Australian Birds. Melbourne: Birds Australia.

Benshemesh, J. (2000) National Recovery Plan for Malleefowl. Adelaide: Department of Environment and Heritage.

Bureau of Meteorology (2007) Climate Data Online (on-line). Accessed December 2007.

Department of Environment and Heritage (2003) National Vegetation Information System (NVIS). Pre-European and Present Native Vegetation. (Published Data-Stage 1, Version 2) National Land & Water Resources Audit (on-line) Accessed 2006.

Parsons, B.C., Short, J.C. and Roberts, J.D. (2008) Contraction in the range of Malleefowl (Leipoa ocellata) in Western Australia: a comparative assessment using presence-only and presence-absence datasets. Emu 108: 221-231.

Parsons, B.C., Short, J.C. and Roberts, J.D. (in press) Using community observations to predict the occurrence of Malleefowl (Leipoa ocellata) in the Western Australian wheatbelt. Biological Conservation.

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Dunn Rock and Lake King. Downloaded from on 27/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife