Inside Dr. Pepperberg's Lab: A Parrot's Concept Of Same-Different – Pet Birds by Lafeber Co.
Alex, a Parrot Who Had a Way With Words, Dies - The New York Times
Alex the African grey parrot | The British Library
Alex - Alex Foundation
The Loving Final Words Of The Einstein Of Parrots, Alex The Parrot
Alex (parrot) - Wikipedia
Alex the parrot is the only non-human to ask the existential question- "What color am I"
Alex the parrot - YouTube
Grey parrot - Wikipedia
Life with Alex Movie – Get to know the most famous African Grey Parrot
Wait, what? Alex, the parrot with a little human brain – Diff
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Facts About African Grey Parrots
Mathematical Abilities of an African Grey Parrot | Stale Cheerios
Life with Alex (2011) - IMDb
Alex & Me | Book | Scribe UK
Alex - Alex Foundation
Parrot who learned to say 'I love you' and mean every word! | Daily Mail Online
Alex - Alex Foundation
Are You a Bird Brain? You May Wish You Were! - Allen School of Health Sciences
Gifted research parrot Alex found dead
Alex the Parrot Was the First Animal To Ask an Existential Question
Book Review | 'Alex & Me,' by Irene M. Pepperberg - The New York Times
My parrot and I
Alex the Parrot: No Ordinary Bird: A True Story: Spinner, Stephanie, So, Meilo: 9780375868467: Amazon.com: Books
