The prevalence of emergency sirens in New South Wales as it battles record wildfires has been highlighted by copycat magpie.

A week-long state of emergency's also started in New South Wales, where the Australian Navy's begun evacuating people from the town of Mallacoota, in East Gippsland, which is one of many towns devastated by ongoing blazes.

Firefighters and emergency sirens are such commonplace in the state now that a magpie has been recorded making the same wailing sound of a siren.

Magpies are known for mimicking the sounds of other creatures, including humans and dogs. 

While the video shows a lighter impact from the ongoing fires, other animals have not been so lucky.

Ecologists from the University of Sydney now estimate 480 million mammals, birds and reptiles have been lost since September.

The figure is likely to soar following the devastating fires which have ripped through Victoria and the NSW South Coast over the past couple of days,

It's feared entire species of plants and animals have been wiped out.