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- 問題詳情：Manycityresidentshavewitnessedinstancesofseemingbirdgenius，fromcrows(烏鴉）usingtraffictocracknutstoaseagull(海鷗）openingbagsofDoritosithadstolenfromaconveniencestore.Nowthere’sevidencethattheurbanenvironmentitselfmightbemakingbirdssmarter,accor...
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