This title, that has taken Australian author, Dr Terry Martin BVSc, some five years to complete, aims to be the most definitive, collective work ever attempted on this intriguing and contentious subject. Drawing on information from specialist parrot mutation breeders from all over the world, Terry Martin has collated over 700 colour photographs within text that is both approachable and easily understood. Presented in three parts, the author takes the reader through an introduction to understanding the basic principals of mutations and colour genetics in the first two parts. The information has been supported throughout with a plethora of colour photography. Part three is for the adventurous, being the technical manifest of genetics in parrots. Over 80 species of parrot are discussed with numerous examples of breeding outcomes to assist the breeder in understanding how various mutations can be bred and developed. The underlying objective throughout this book is the author's attempt to standardise the naming of colour mutations internationally.