The kenku are a legendary tribe of songbirds who got struck with a curse that removed their voices and left them only able to repeat their training data.
In some tellings of the story, they also got their names taken away. (That's really the same story because a bird's song is their name).
known subspecies
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recursive mockingbird
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content-thieving magpie
things a kenku cannot do
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reverse public-key cryptography
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tell a story at the Fire