I answered an add today from a local who got his granddaughter and incubator for Christmas and is looking for test run eggs. I have a small mixed flock with one ugly silkie roo and they lay fertile eggs every day. Now this man wants a dozen eggs. My flock only lays 4-5 eggs a day. How do I collect the eggs over a period of days to get to this man. Where should I store them between now and Monday?