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.
Depending on the size and type of debt, the collection agency may require full payment of the debt, agree to take a portion of the debt or allow you to make payments to settle your charged off account, according to Bankrate. How Long Does a Charge-Off Stay on My Credit Report if I Don't Pay? A charge-off remains on your credit report for seven years. The seven years does not begin when you pay the debt in full; it begins when the account was charged off.