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. 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. I t 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.