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Quick read. I read thru some of the other reviews and while I think they are valid this book is just a memoir, not a documentation of all the work done with Alex. As a former parrot owner (sadly, could not keep because mine never adjusted to me having a spouse and children) it was fascinating to see what they can learn when taught correctly. I enjoyed this... enough... though it wasn't captivating. I read a LOT of scientific texts, and this was for the lay public, so it was easily digestible. All in all, if the topic interests you, it is an interesting read.