Cuttlefish bone is a kind of calcium-rich food, which is very beneficial to the bone health of parrots. Here are the ways to feed parrots to eat cuttlefish bones:

1. Ensure the source of cuttlefish bone is safe and reliable, preferably fresh or dried cuttlefish bone. Avoid using cuttlefish bones with flavoring agents or other harmful substances.

2. Grind cuttlefish bone into powder, which is easier to be digested and absorbed by parrots. You can crush cuttlefish bones with a grinder or a rolling pin.

3. Sprinkle a proper amount of cuttlefish bone powder in the parrot's food, which can be the feed or fruits and vegetables that the parrot usually eats. Ensure that parrots can fully ingest cuttlefish bone powder.

4. Pay attention to control the dosage of cuttlefish bone powder, just the right amount, not too much. Excessive intake of calcium may have a negative impact on parrot health.

5. Observe the health status of parrots regularly, stop feeding cuttlefish bones in time if any abnormality or discomfort is found, and consult the veterinarian for advice.