If disaster should befall the larger chick the parent can switch to feeding the youngest and it will exhibit a constant growth curve from the day of active feeding. From Wikipedia
Simply send them a letter (with proof of delivery) using the contact information found on your credit report. Generally they have 30 days to investigate and get back to you, or the information must be removed.
Dealing with an old charge-off can actually work against you. Charge-offs will drop off of your credit report after seven years. If you make a payment to settle an old charge-off, it will actually update the date of the charge-off and it will appear on your credit report for another seven years. The only exception would be if you can get them to agree to remove the account entirely from your report. Again, get it in writing.