The Alex Studies: Cognitive and Communicative Abilities of Grey Parrots
A Honk In Your Heart: The Wisdom of Alex the Honking Bird
Alex & Me: how a scientist and a parrot discovered a hidden world of animal intelligence — and formed a deep bond in the process
Alex & Me: How a Scientist and a Parrot Discovered a Hidden World of Animal Intelligence--And Formed a Deep Bond in the Process (Paperback) - Common
Alex & Me: how a scientist and a parrot discovered a hidden world of animal intelligence ― and formed a deep bond in the process
Alex & Me: How a Scientist and a Parrot Discovered a Hidden World of Animal Intelligence-and Formed a Deep Bond in the Process
