The flightless bird, known as Genyornis Newtoni, was nearly 7 feet tall and weighed 227 kilograms, and appears to have lived in much of Australia prior to the establishment of humans on the continent 50,000 years ago, said Gifford Miller from the University of Colorado Boulder in US.
    
Researchers found reliable proof that humans were preying on now-extinct Australian Megafauna.
    
The evidence consists of diagnostic burn patterns on Genyornis eggshell fragments that indicate humans were collecting and cooking its eggs, thereby reducing the birds' reproductive success, he said.
    
In analyzing unburned Genyornis eggshells from more than 2,000 localities across Australia, primarily from sand dunes where the ancient birds nested, several dating methods helped researchers determine that none were younger than about 45,000 years old.
    
Burned eggshell fragments from more than 200 of those sites, some only partially blackened, suggest pieces were exposed to a wide range of temperatures, researchers said.

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