Subject: [Tweeters] Crows keep special tools extra safe: Study suggest that crows have some concept of the relative 'value' of different tool types -- ScienceDaily
Date: Sat Jan 29 15:48:31 PST 2022
From: Dan Reiff - dan.owl.reiff at gmail.com


https://www.sciencedaily.com/releases/2021/12/211221102752.htm


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