An extinct genus of massive, flightless Australian birds related to emus, now called thunderbirds.
From Greek dromos 'running' plus ornis 'bird'; named for these enormous running birds that dominated Australian megafauna.
Dromornis stood nearly 10 feet tall and weighed 500 pounds—imagine a running bird that could outrun and overpower a lion! They went extinct only 25,000 years ago.
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