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.
The credit card that is in collections is a closed account. Paying it off will not take that bad item off your credit report and it will have little to no effect on your poor score. Accounts that are charged off will stay on the credit report for 7 1/2 years after first delinquency. Paid off nor not.