https://www.webwiki.nl/charmin....gafricangreyparrotfo
https://vuf.minagricultura.gov.....co/Lists/Informacin
Alex the African Grey Parrot Irene Pepperberg, an animal psychologist, purchased Alex in 1977 from a pet shop located on the Northwest Side. She began an investigation lasting 30 years that would change our perception of the intelligence of avian species. Alex's research disproved the belief that birds could only imitate human language without understanding meaning. What is Alex? Alex (short form for Avian Learning experiment)
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