The Alex Studies: Cognitive and Communicative Abilities of Grey Parrots

Alex & Me: How a Scientist and a Parrot Discovered a Hidden World of Animal Intelligence--and Formed a Deep Bond in the Process

African Grey Parrots (A New Owner's Guide)

Parrots of the Wild: A Natural History of the World's Most Captivating Birds

The Parrot Problem Solver

The Soul of an Octopus: A Surprising Exploration into the Wonder of Consciousness

The Perfectly Trained Parrot

Guide to a Well-Behaved Parrot (Barron's)

Fifty Shades of African Grey: Pickles The Parrot Dominates Life