Normally, your bird's beak should not require grooming. The natural wear and tear that your bird puts on its beak during daily feeding, climbing, beak-grinding and playing is usually enough to keep your bird's beak right where it should be. Occasionally, however, a bird might have physical limitations or deformities that make self-care of the beak impossible. Malocclusions are one such case. In this situation, a bird's beak may be under-shot or over-shot. More commonly, the upper or lower beak (Maxilla or Mandible) veer or grow off to the side. This can be due to birth defect or injury. Certain illnesses, such as fungal infection or mite infestation, can cause beak-growth problems, too. Injuries are yet another cause of beak-growth problems. For example, Seymour, the bird president of Birdmart.Com sustained an injury to her skull many years ago. As a result she has very limited movement of her upper beak. Because of this, she is unable to grind her beak properly, and has problems with beak overgrowth problems.
It is important to note that a beak length that might seem normal on one species of bird may be too short or too long on another species. For example, the Hyacinth Macaw (pictured above) had a beak that is relatively long when compared to other Macaws. If you are not sure what is normal for your type of bird, visit a bird store and compare, or ask your avian veterinarian.
If you are concerned that your bird's beak is not being naturally kept in peak condition, see your avian veterinarian. Do not attempt to remedy this yourself. It is important that you find the cause of the abnormality, instead of simply treating it. Once you find the cause, you and your veterinarian can discuss the best ways to keep your pet's beak in the best health.