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How tall was the extinct bird Diatryma steini?
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Gruiform
White-naped crane (Grus vipio).
The extinct bird Diatryma steini stood approximately 7 feet (2 metres) tall. This giant, flightless bird, which lived during the Eocene Epoch, was characterized by its massive head, powerful beak, and heavily constructed legs, which likely made it a strong and rapid runner.12