“Quack quack” is likely what you’re used to hearing from a duck. Now, researchers have found a human-reared musk duck in Australia who seems to quack the words, “you bloody fool.” In a newly published paper, researchers reviewed 34-year-old recordings made of the musk duck named Ripper, who, instead of just the normal sounds of a waterfowl species, engaged in an aggressive display, and uniquely mimicked human speech.
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