Bird Beaks
Although the beaks of parrots are constantly growing at a rate of 1-to-3 inches per year, depending on the species, a healthy pet does not need to have his beak trimmed. Your bird should keep his beak at the proper length through his normal chewing activities.
Contrary to what some bird books still preach, don't accept "beak trims" as a routine health-care measure -- they're not. Overgrowth of the beak is frequently a sign of illness. If you have any concerns about your bird's beak, check in with a veterinarian who specializes in bird care.