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Humans can tell by chickens’ calls if they are happy or frustrated. Scientists played audio recordings of hens to nearly 200 volunteers and found that 69% could tell the difference between birds that were happy about an imminent treat and those that were annoyed that no such reward was forthcoming. (reddit)
theguardian.com
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mvea
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on Wed, 03 Jan 2024 08:26:15 GMT.
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