Instructions
Push into your bird's beak and the bird will release you from its bite. Pushing into the bird's beak instead of pulling away will also prevent your skin from tearing.
Put the bird in its cage immediately after it bites you, and close the cage door. Leave the bird in the cage for a set amount of time. The amount of time will depend on the owner and the type of bird it is. A good amount of time is anywhere from 10 minutes for a small bird to an hour for larger parrots, for each bite.
Repeat steps 1 through 2 every time the bird bites you. Avoid responding to the bite by saying "ow," "ouch" or talking to the bird in anyway, either when it bites or attempts to bite you.
Spend at least 30 minutes every day with your bird. This will lessen the chances of the bird biting you, because your bird will become accustomed to being handled.
How to Train a Bird to Stop Biting
Birds bite for many reasons: because of their diet, disease or illness, learned behavior. It is important to treat the underlying causes of the biting first, if there are any, before attempting to correct biting behavior. Baby birds tend to explore their surroundings with their mouths just like human babies. This is when learned behavior can occur. You may scream "ouch" or even laugh when the baby bites you. Unfortunately, by doing so you are only encouraging the bird to bite you more. The correct way to handle a bite is to not respond at all, and then immediately place the bird in its cage. The bird will correlate biting with returning to its cage, and the biting will eventually stop.