Her investigation and the bird at its center--a male Grey parrot named Alex--have since become almost as well known as their primate equivalents and no less a subject of fierce debate in the field of animal cognition. This book represents the ...
An African Grey parrot, Alex had a brain the size of a shelled walnut, yet he could add, sound out words, understand concepts like bigger, smaller, more, fewer, and none, and he disproved the widely accepted idea that birds possess no ...