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Location Australia, Victoria
Central coordinates 145o 47.69' East  38o 39.46' South
IBA criteria A1, A4i
Area 2,371 ha
Altitude 0 - 2m
Year of IBA assessment 2009

BirdLife Australia

Summary The site contains significant intertidal mudflats which attract internationally significant numbers of Red-necked Stints. It may also prove to regularly support the critically endangered Orange-bellied Parrot (six were seen in 1998 and two in 1999).

Site description The IBA consists of the whole estuary of the Tarwin river, including all areas of saltmarsh and fringing vegetation. Anderson Inlet is one of the largest estuaries on the Victorian coast, situated between Westernport and Corner Inlet. A series of spits developed across a former embayment to create the inlet which has in-filled with estuarine sediment. Large areas of mudflats are exposed at low tide. The ocean beach on the seaward side of the spits (outside the IBA boundary) is sandy and supports few birds.

Key Biodiversity The site also regularly supports significant numbers of the following species but they do not exceed the thresholds: Double-banded Plover max. count 275 in 2003, Eastern Curlew max. count 300 in 2000, Chestnut Teal max. count 553 in 2003 and Pacific Gull max. count 68 in 2006. Hooded Plover along beach of Venus Bay west of IBA (recorded maximum count was 28, with 24 in 2006). The biome-restricted Striated Fieldwren is frequently encountered in vegetation around the margin of the inlet (Atlas of Australian Birds database).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Red-necked Stint Calidris ruficollis non-breeding  2000-2006  543-6,390 individuals  good  A4i  Near Threatened 
Orange-bellied Parrot Neophema chrysogaster non-breeding  1998-2006  6 individuals  good  A1  Critically Endangered 

IBA Monitoring

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

Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) no or imperceptible deterioration low
Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - named species happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution agricultural & forestry effluents - type unknown/unrecorded happening now majority/most of area/population (50-90%) no or imperceptible deterioration low
Residential and commercial development housing and urban areas likely in short term (within 4 years) small area/few individuals (<10%) very rapid to severe deterioration low

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Cape Liptrap Coastal Park Other Park 4,225 protected area overlaps with site 6  


IUCN habitat Habitat detail Extent (% of site)
Coastline Intertidal mud, sand & salt flats; Mangrove wetlands; Salt marshes  major
Shrubland Other shrublands  minor
Introduced vegetation   major

Land ownership Managed by Victorian State Government DSE and several Committees of Management.

Land use

Land-use Extent (% of site)
fisheries/aquaculture minor
Notes: recreational fishing and bait gathering
hunting minor
Notes: duck hunting in season
tourism/recreation major
Notes: popular for camping and wide range of boating activities

Protection status Small overlap with Cape Liptrap Coastal Park.

Acknowledgements Bird data supplied by the AWSG Victorian Branch and Jim and Anthea Whitelaw with consultation with Brian Martin - Parks Victoria.

References AWSG wader count database (accessed 2006). DEWHA (2008) Directory of Important Wetlands in Australia. accessed 2008. Weston, M. (2003) Managing the Hooded Plover in Victoria. Unpublished report to Parks Victoria, Melbourne.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Anderson Inlet. Downloaded from on 22/10/2016

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