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.
The credit items that are negative on your account, the tradelines, have to come off your credit report after 7 years from the start of the Original debt its for, or the LAST time you paid them.