I have a nurture right harris farms 360 incubator and I set 10 eggs from my 1 easter egger...all were 10 days or less old. I also set 2 eggs from my welsummer and 10 silkie eggs. I candles at 5 days and took out 2 silkie eggs that didn't have anything happening. I thought the green eggs were developing but maybe I was mistaken. I didn't candle again. On hatch day I had 9 silkies hatch and both the welsummers and ONE easter egger! I candled the eggs after a few days of waiting and it looks like they didn't develop at all. Can anyone explain why the eggs from one hen would be useless?