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| A placeholder for a future Earth setting where humans have gone extinct and ravens have taken our place.
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| == Background ==
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| * Humans wiped out
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| * An asteroid wipes out the remaining great apes
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| * When do the corvans evolve?
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| == About the corvans ==
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| Corvans are a species of giant flightless birds (descended from present-day ravens) who use language and manipulate tools with their beaks and tongues, dextrous feet and adapted wings. They speak using their highly developed syrinxes.
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| They're just small enough to glide and fly short distances while carrying objects. Their leg muscles thickened because of a need to carry light cargo.
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| Corvans invented wheels shortly after they evolved and then spread all over the world in just a few millennia.
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| === Vocal tract ===
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| Corvan spoken language uses both the syrinx and the tongue. Since they have no lips and no teeth they cannot make labial or dental sounds. However, they can do a lot with their syrinxes and even produce two vocal tones simultaneously.
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| * non-tonal languages
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| * monotonal languages
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| * bitonal languages (simple JI ratios as phonemes)
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| [[Category:Conworlds]][[Category:Future Earth]]
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