Your bird’s beak grows continually like our fingernails do.
The rhamphotheca is made of keratin, which is the same substance found in antlers or our fingernails. And like horns or fingernails, the beak is constantly growing. Depending upon the species, a bird’s beak grows from one to three inches a year. … These aid the bird in cracking nuts and hard fruits.
Your bird should have plenty of toys to chew on as well as methods of foraging. We have to supply these things for our fids to simulate what they do in the wild. If their beak is growing normally, it should not be necessary to trim the length of the upper beak. You may want to have the tip filed down to blunt the point. If your bird’s beak is growing too fast or growing abnormally (refer to images) you should always consult with your avian veterinarian to determine the cause.