If there's one parrot problem that has both bird owners and veterinarians pulling out their own hair in frustration, it would have to be feather-picking, a bird's willful destruction of his own plumage.

Universal Press Syndicate There's no one reason why birds pick their feathers, and often no easy solution.

The first thing you need to know about this problem: Feather-picking is a symptom of something else that's wrong with your bird. The only hope you have of "curing" feather-picking is finding out and treating what's behind the behavior.

Feather-picking relates to a staggering variety of problems, and any one or any combination of the following can be behind your bird's plucking:

Health problems. Medical conditions behind feather-picking include allergies, parasitic infections, bacterial infections, abnormal growths (cysts) in the feather follicle, internal health problems, vitamin deficiencies and hormone-associated problems. And that's the short list.

Low humidity. Many bird species originally come from extremely humid environments, and our houses can't hope to duplicate the conditions of a rain forest (we'd be miserable). The dry air of most houses can be a factor in feather-picking and can also set the stage for some secondary medical problems.

Boredom and pent-up energy. Birds are active and intelligent, and they don't handle well the strain of being forced to sit around in a cage all day. Without things to play with and stuff to destroy, and without being able to get out of the cage and exercise, birds may direct all their energy toward self-mutilation.

Psychological problems. Although birds need to have their wings trimmed for safety, a bad wing trim -- too short, with no allowance for an "easy landing" -- can upset a bird so badly that he starts tearing at himself. Obsessive-compulsive disorders can also trigger feather-picking.

Attention-seeking. You love how your bird looks. He starts tugging at feathers and you freak, imagining your beautiful bird with the broiler-chicken look. Every time he touches his feathers -- even for normal preening behavior -- you rush over. See how this works? "Aha!" thinks your bird. "All I have to do to get attention is pull a feather!"

What can be done with the feather-picker? First, forget the over-the-counter and home remedy "cures." They don't work, and some might even put your bird at risk.

See a veterinarian with experience in caring for birds as soon as the problem appears. Medical problems need to be addressed before looking at any behavioral strategies.

Make sooner, rather than later, your emphasis. In general, the longer your bird has been picking, the greater the probability of an unresolvable pattern of behavior being set. Don't wait a few years before addressing a picking problem. When it starts, you need to start looking for a solution.

After your bird receives a clean bill of physical health, start making environmental adjustments to see whether you can ward off the picking. Prepare for the project to be a long one! Start a diary to record your changes and any effects they may have on your bird's behavior.

Start shaking things up, in small increments. A daily misting with a spray bottle and the addition of a room humidifier may be part of the solution. Also consider different toys, a smaller or larger cage, a new cage location, keeping a radio playing during the day, covering the cage to ensure your bird 12 solid hours of sleep, and more interaction and play with you as possibilities in the war against feather-picking.

Sadly, the definitive solution to feather-picking doesn't exist.

The best you can do is be patient, work with an avian veterinarian and be prepared to love your bird no matter what he looks like. In some cases, feather-picking is for life. In others, the problem is only occasional.

Yes, some birds do become full-feathered again, but not every pet bird is bound for complete redress in the plumage department.

Dr. Marty Becker, the popular veterinary contributor to ABC-TV's "Good Morning America," has been writing a syndicated newspaper column for more than a decade. Becker is also the host of "The Pet Doctor With Marty Becker," which airs on PBS stations around the country. He has appeared on Animal Planet and is a frequent guest on national network and cable television, and on radio shows.

Gina Spadafori is the award-winning author of top-selling pet-care books, and a consultant to the Veterinary Information Network. Her Web log and column archives can be found at www.spadafori.com.