Ravens are better at delay discounting, barter, and future planning than you are!http://science.sciencemag.org/content/357/6347/202?utm_source=SciPak%20%2528updated%206%252F30%252F2017%2529&utm_campaign=febb65c3fc-EMAIL_CAMPAIGN_2017_07_07&utm_medium=email&utm_term=0_10c5e799a3-febb65c3fc-126515301 …
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