circa 1800:  The Cassowary, a type of flightless bird related to the emu.  (Photo by Hulton Archive/Getty Images)

circa 1800: The Cassowary, a type of flightless bird related to the emu. (Photo by Hulton Archive/Getty Images)

Download this HD photo of emu, flightless bird, illustration, and archival by Getty Images (@gettyimages)

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