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Location Australia, New South Wales (and ACT)
Central coordinates 151o 21.63' East  33o 29.03' South
IBA criteria A1
Area 2,277 ha
Altitude 2 - 45m
Year of IBA assessment 2009

BirdLife Australia

Summary This IBA has a significant isolated population of Bush Stone-curlews and occasionally supports significant numbers of the endangered Swift Parrots and Regent Honeyeaters during autumn and winter, when the Swamp Mahogany is flowering.

Site description The IBA consists of the southern section of Brisbane Water, a large estuarine lake. It includes the foreshore, mangroves, saltmarsh and flat coastal land around Kincumber Broadwater, Cockle Channel and Linten Channel. It also includes the Swamp Mahogany forests around Kincumber South, Bensville and Empire Bay.

Key Biodiversity Largest colony of Australian Pelican in NSW; about 400-500 pairs; active year-round. 12-14 pairs of Pied Oystercatcher. Small numbers of Eastern Curlew (max 55), Bar-tailed Godwit (max 60), Whimbrel (max 35) and Grey-tailed Tattler (max 20). Two records of the restricted-range Green Catbird from 1998 to 2008 (Atlas of Australian Birds database).

Non-bird biodiversity: The threatened Fawn-footed Melomys and Yellow-bellied Glider occur in the swamp forest.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bush Thick-knee Burhinus grallarius resident  1992-2006  8-10 breeding pairs  good  A1  Least Concern 
Swift Parrot Lathamus discolor non-breeding  1992-2007  10 individuals  A1  Critically Endangered 
Regent Honeyeater Xanthomyza phrygia non-breeding  1992-2007  50 individuals  A1  Critically Endangered 

IBA Monitoring

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

Human intrusions and disturbance recreational activities happening now small area/few individuals (<10%) moderate to rapid deterioration low
Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - named species happening now small area/few individuals (<10%) slow but significant deterioration low
Residential and commercial development housing and urban areas likely in long term (beyond 4 years) small area/few individuals (<10%) moderate to rapid deterioration low

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Bouddi National Park 1,621 protected area overlaps with site 0  
Cockle Bay Nature Reserve 45 protected area contained by site 44  
Pelican Island Nature Reserve 51 protected area overlaps with site 40  
Rileys Island Nature Reserve 41 protected area contained by site 41  


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial Urban parks & gardens  minor
Forest Eucalypt tall open forests  major
Coastline Estuarine waters; Mangrove wetlands  major

Land ownership Private, State and local government.

Land use

Land-use Extent (% of site)
rangeland/pastureland minor
Notes: Cattle grazing
fisheries/aquaculture minor
Notes: Oyster farms
nature conservation and research major
tourism/recreation minor
Notes: especially boating and fishing
urban/industrial/transport major
water management minor

Protection status Several - see separate section.

Acknowledgements The nomination was prepared by Alan Morris following consultation with Reserves Manager, Gosford City Council. Nicci Bennetts, Community Liaison Officer, Gosford City Council. Alan Henderson, Area Manager East, NPWS. David Geering, Regent Honeyeater Coordinator. Catherine Price, Bush Stone-curlew Recovery Coordinator. Garon Stains, Environmental Consultant.

References Environment and Conservation (NSW) (2004) Regent Honeyeater Xanthomyza phrygia, draft

Morris, A. K. (2002) Conservation status of the Bush Stone-curlew in the Brisbane Water Area. Unpublished report to Gosford City Council.

National and NSW Recovery Plan. DEH, Canberra.

NSW NPSW (2005) Recovery Plan for the Bush Stone-curlew. NWS National Parks and Wildlife, Hurstville, Sydney.

Price, C. (2004) the Bush Stone-curlew Burhinus grallarius on the central coast of New South Wales. Masters Thesis, University of Sydney.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Brisbane Water. Downloaded from on 26/10/2016

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