Alex 
, a randomly selected African Grey parrot from a pet shop for Dr. Irene Pepperberg's cognition and communication research of birds in 1970's, has died. It is 31 years old.
Alex, the world renowned African Grey parrot made famous by the ground-breaking cognition and communication research conducted by Irene Pepperberg, Ph.D., died at the age of 31 on September 6, 2007. Dr. Pepperberg’s pioneering research resulted in Alex learning elements of English speech to identify 50 different objects, 7 colors, 5 shapes, quantities up to and including 6 and a zero-like concept. He used phrases such as “I want X” and “Wanna go Y”, where X and Y were appropriate object and location labels. He acquired concepts of categories, bigger and smaller, same-different, and absence. Alex combined his labels to identify, request, refuse, and categorize more than 100 different items demonstrating a level and scope of cognitive abilities never expected in an avian species. Pepperberg says that Alex showed the emotional equivalent of a 2 year-old child and intellectual equivalent of a 5 year-old. Her research with Alex shattered the generally held notion that parrots are only capable of mindless vocal mimicry.
Alex has been featured worldwide on numerous science programs including the BBC, NHK, Discovery and PBS. He is well known for his interactions with Alan Alda in an episode of Scientific American Frontiers on PBS and from an episode of the famed PBS Nature series called “Look Who’s Talking.” Reports on Alex’s accomplishments have appeared in the popular press and international news from USA Today to the Wall Street Journal and the New York Times. The Science Times section of the New York Times featured Alex in a front-page story in 1999.
Alex has been featured worldwide on numerous science programs including the BBC, NHK, Discovery and PBS. He is well known for his interactions with Alan Alda in an episode of Scientific American Frontiers on PBS and from an episode of the famed PBS Nature series called “Look Who’s Talking.” Reports on Alex’s accomplishments have appeared in the popular press and international news from USA Today to the Wall Street Journal and the New York Times. The Science Times section of the New York Times featured Alex in a front-page story in 1999.Source: Alex the African Grey parrot and subject of landmark studies of bird intelligence dies at 31 @ AlexFoundation.org