Can genetics cause my chick not to hatch? I'm trying to hatch chicks from blue and green eggs from mixed breed chickens. I hatched the hens from a leghorn rooster and olive egger hens. The hens are solid white with pea combs and muffs. They all lay blue and green eggs. I'm trying to hatch their eggs with a leghorn rooster and a mix breed rooster that has the sliver gene. I had 20 of their eggs but only 2 blue and 2 green are developing. The other ones stopped after day 3 with blood rings. I also have brown eggs that are developing fine. So now I'm wondering if it could be a gene thing. What do all think?