Book excerpt: This antique book contains a detailed and interesting guide to breeding very specific colours into pet budgerigars, as well as containing detailed information on hybrids, mule breeding, and the importance of record keeping. The perfect book for both professional and private breeders, this text is both easy-to-digest and detailed, and constitutes a great addition to any collection of avicultural literature. Chapters contained in this book are: 'The Elements of Colour Production', 'The Colour Varieties and Recommended Pairings', 'Colour Production', 'In-Breeding', 'Hybrids and Mule Breeding', and 'Keeping Records'. This book has been chosen for modern republication because of its timeless educational value, and is proudly republished here complete with a new introduction to the subject of aviculture.