My Black Spanish hen laid her first egg today All of a sudden, I feel stupid so here goes. I picked it up and have it in a clean egg carton in the house, I marked the date with a pencil, the small pointy end up. I plan to incubate my eggs or sell hatching eggs later once I have some successful hatches. How long can they be kept before putting in an incubator? I only have one hen so it will only be an egg a day or so. Can I set them in groups to hatch a few at a time? And how many is a good group to set at one time? Should I be seeing changes when I candle them within a day or two? sooner? later when in the incubator?