This is a list of birds of Victoria, Australia. Victoria is Australia's second-smallest state but has high biodiversity, with 516 bird species recorded — around 54% of Australia's total of 959 bird species in just 3% of Australia's land area. Birds are present in high concentrations in some areas, including the Western Treatment Plant at Werribee in Melbourne's suburbs, which is a haven for tens of thousands of birds, due to a combination of permanent water, varied landforms and plant species.