As parrots can, he also picked up one-liners from hanging around the lab, like “calm down” and “good morning.” He could express frustration, or apparent boredom, and his cognitive and language skills appeared to be about as competent as those in trained primates. His accomplishments have also inspired further work with African gray parrots; two others, named Griffin and Arthur, are a part of Dr. Pepperberg’s continuing research program.
Even up through last week, Alex was working with Dr. Pepperberg on compound words and hard-to-pronounce words. As she put him into his cage for the night last Thursday, she recalled, Alex looked at her and said: “You be good, see you tomorrow. I love you.” He was found dead in his cage the next morning, Dr. Pepperberg said."
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