Poultry Colour Guide - by Dr. Joseph Batty.

This book is a breakthrough for the small breeder and pet owner.

Easy-to-follow recommendations about selecting and caring for your budgerigar

A Saga of Natural History and Conservation.

An essential guide for anyone who owns finches.

Western birds covers every breeding species west of the Rockies.

World of Budgerigars written by Cyril H. Rogers.