The Complete Book of Cockatiels by Diane Grindol.
Most of you probably don't plan on buying a library of 'tiel books. But owning at least one book would be helpful in the care of your cockatiel. And this should be it. The Complete Book of Cockatiels makes the scientific research from the UC Davis veterinary school's cockatiel colony readily accessible, and incorporates essential information for new owners and breeders.

The book's written style is engaging and fresh, while its photographs are of superb quality (often demonstrating step-by-step procedures such as wing and nail clipping). An expansive hardcover volume, its topics include choosing a bird, choosing a veterinarian, nutrition and feeding, water, daily care, enclosure design and placement, socialization and play, treats, toys, training, safety concerns, medical emergencies, communication and behavior, breeding, and a selection of stories from cockatiel owners. This excellent book's title is well deserved.

Cockatiels! Pets-Breeding-Showing by Nancy A. Reed and Rainer R. Erhart (Editor).
Beyond the world of cockatiel care is their breeding. This book does a commendable job of covering expert techniques involved with breeding and showing 'tiels. However, it is less oriented toward beginning cockatiel owners than other books; some people find its style too dry and technical. It would be improved by some updating, but some of its readers, generally intermediate-advanced owners, still consider it indispensible to its subject.

The Cockatiel Handbook by Matthew M. Vriends.
Published in late 1999, this illustrated book provide informations on healh care, proper feeding and housing, training and other animal-care details of interest to pet owners. It is filled with full-color photos and instructive line art. This handbook gives detailed purchase advice and addresses considerations related to cages, nuttrition, health, and safety.

Cockatiels (Complete Pet Owner's Manuals) by Thomas Haupt.
Another popular book that was recently released by Barron's, it convers many of the issues involved in raising and breeding 'tiels. Includes even the littlest details (how to care for newborn cockatiels, anyone?). An attractive paperback.

Other Cockatiel Books
An excellent selection of other cockatiel books is available from Amazon.com.