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.
Your charged-off accounts will stay on your credit reports for seven years and then must be removed under the Fair Credit Reporting Act. So, if you choose not to pay, you will have to wait that long for the charge-offs to no longer affect you.