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
Depends, a repo stays on credit for 7 years, and a bankruptcy stays for 11 years, after you have paid off a debt and they have received payment it should be taken of immediately, but you may want to get a free credit report and check and if it is still there call them and ask them about it.
Nothing's stopping creditors from attempting to contact you, as long as they stay within the rules. If you pay off the debt, it will be marked as paid on your credit report. If you don't pay off the debt, the best you can do is to keep your credit report clean from now on and wait for the seven years to pass. Keep a close eye on your credit from now on, and soon you can have a credit history to be proud of.