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.
It says paid tax liens. A paid tax lien will be on your credit report for seven years from the date you paid it off. That means, if you're making payments, the clock doesn't start on the credit reporting period until you make that last payment. But tax liens aren't like collection accounts.