Regarding your ring neck -- likely only experiencing flaking of the layers of the beak 'or' cage bar grinding with can chip the 'cutting' edge of the beak.
Budgeting Avian Care is very important as there is no way to schedule 'medical emergencies.'
FYI #1: 'SEEDS' is not a genetic term for sunflower seed! Seeds reference a Very Wide cross-section from a huge selection of grasses, flowers, to plants in general and just as widely grains. The term seeds has come to define "Sunflower" seed, which should not be a standard, large portion of any Parrots diet...
FYI #2: 'PELLETS' is a diet supplement, and like any supplement should be used to support a well balanced 'natural' diet filled with a wide range veggies, a small portion of fruit, a wide range of 'natural' seeds, grains, and select nuts common for the home range of your Parrot, with pellets supplementing this 'natural' diet.