Alex The Grey Parrot died at age 31

From http://scienceblogs.com/grrlscientist/2007/09/alex_the_grey_parrot_colleague.php
Irene Pepperberg purchased Alex from a Chicago pet store in 1977, when he was approximately one year of age, or perhaps younger. Alex, being quite a character, quickly took over Pepperberg’s life by teaching her all he knew about cognition and communication. As early as 1999, he was able to “identify 50 different objects and understand quantities up to 6; he could distinguish 7 colors and 5 shapes, and understand the concepts of ‘bigger’, ‘smaller’, ‘same’, and ‘different’, and he was learning ‘over’ and ‘under’,” according to the New York Times. By 2002, Alex had a vocabulary of more than 100 words.

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