The Cheetham and Altona Important Bird Area comprises several wetland

Wetland

A wetland is an area of land whose soil is saturated with water either permanently or seasonally. Wetlands are categorised by their characteristic vegetation, which is adapted to these unique soil conditions....

 sites on, or close to, the north-western coast of Port Phillip

Port Phillip

Port Phillip Port Phillip Port Phillip (also commonly referred to as Port Phillip Bay or (locally) just The Bay, is a large bay in southern Victoria, Australia; it is the location of Melbourne. Geographically, the bay covers and the shore stretches roughly . Although it is extremely shallow for...

 in Victoria

Victoria (Australia)

Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....

, south-eastern Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. Collectively they total 1223 ha in area and lie within, or adjacent to, the western suburbs of the city of Melbourne

Melbourne

Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater...

. They were classified as an Important Bird Area

Important Bird Area

An Important Bird Area is an area recognized as being globally important habitat for the conservation of bird populations. Currently there are about 10,000 IBAs worldwide. The program was developed and sites are identified by BirdLife International...

 (IBA) because they support more than 1% of the world populations of Red-necked Stint

Red-necked Stint

The Red-necked Stint is a small migratory wader.- Description :These birds are among the smallest of waders, very similar to the Little Stint, Calidris minuta, with which they were once considered conspecific...

, Chestnut Teal

Chestnut Teal

The Chestnut Teal is a dabbling duck found in southern Australia. It is protected under the National Parks and Wildlife Act 1974.-Description:The Chestnut Teal is darker and a slightly bigger bird than the Grey Teal....

 and Pacific Gull

Pacific Gull

The Pacific Gull is a very large gull, native to the coasts of Australia. It is moderately common between Carnarvon in the west, and Sydney in the east, although it has become scarce in some parts of the south-east, as a result of competition from the Kelp Gull, which has "self-introduced" since...

.

Wetlands

The IBA includes the undeveloped coast between Williamstown

Williamstown, Victoria

Williamstown is a suburb in Melbourne, Victoria, Australia, 8 km south-west from Melbourne's central business district. Its Local Government Area is the City of Hobsons Bay. At the 2006 Census, Williamstown had a population of 12,733....

 and Seaholme

Seaholme, Victoria

Seaholme is a suburb in Melbourne, Victoria, Australia, 13 km south-west from Melbourne's central business district. Its Local Government Area is the City of Hobsons Bay...

, including the Jawbone Reserve, Altona Coastal Park

Altona Coastal Park

Altona Coastal Park, a 70 hectares intertidal and salt marsh area located 11 km from Melbourne CBD in the western suburb of Altona, is an important recreational and nature conservation area, providing habitats for a large biodiversity of flora and fauna...

, Rowden's Swamp, the Cheetham Wetlands, Truganina Swamp

Truganina Coastal Parklands

The Truganina Coastal Parklands are located 15 km west of Melbourne CBD, on the shores of Port Phillip Bay, stretching from Altona to Altona Meadows and adjacent to the Cheetham Wetlands and the Point Cook Coastal Park...

, with the Spectacle Lakes complex and RAAF Lake of Point Cook Coastal Park

Point Cook, Victoria

Point Cook is a suburb in Melbourne, Victoria, Australia, 25 km south-west from Melbourne's central business district. Its Local Government Area is the City of Wyndham. At the 2006 Census, Point Cook had a population of 14,162, now it is estimated that the population of Point Cook is 32,167...

. These contain all the remaining freshwater wetlands, saltpans, intertidal mudflats and shallow inshore waters which support the key bird species.