Irene Pepperberg
The scientist who worked with Alex, an African grey parrot, for about 30 years to see how much a bird understands.
Books
The Alex Studies1999The scientific account of her work with Alex, on what grey parrots can learn and how they communicate.

Mentioned in

In praise of asking, part one
Answers got cheap, so where does a good question come from? The story starts with a parrot asking “What’s that?” in front of a mirror, and goes on to silent classrooms and an AI that never needs anything.