Human intelligence has often been held apart from that of non-human animals, but as time goes by we are increasingly discovering that we’re not all so different. A pivotal moment in our understanding of animal intelligence came in 1976 when something remarkable broke out of an egg. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

The young bird wasn’t considered remarkable at the time of his birth, but over the next 30 years he would completely change what we thought we knew about animal cognition. His short life (for his species) came to an end in 2007 – fittingly, with the eerily poetic last words , “You be good. I love you. See you tomorrow.”

Who was Alex the parrot?

Alex the parrot was an African gray parrot. He was purchased fr

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