Crows are smart. Anyone who watches them for a while can figure this out. But that is true of a lot of things. Your baby is smart (not really). Your dog is smart (not really). Ants are smart (sort of). It takes a certain degree of objective research, as well as some serious philosophy of…
source http://scienceblogs.com/gregladen/2016/09/20/very-smart-birds-very-smart-bird-book/
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