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Biology
Quick fact
Yellow-naped amazons (Amazona auropalliata) in Costa Rica produce regionally distinct contact calls, and these dialects have remained stable for over 20 years, with clear geographic boundaries.
Why this is interesting
You might think a parrot's squawk is just instinct. But in the wild, parrots learn their calls from each other, leading to distinct regional dialects that can be as noticeable as human accents.
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Subjects · study & training · careers
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