I’ve been incubating quite a few eggs from my silkies. We should be on day 15 so far but when candling over 75% show no sign of development. I’m not sure why this would be. I have my one roo in with 6 hens. Is he just not getting the job done? I don’t think it’s an issue with my incubator as all my duck and other chicken eggs are all fertilized and deploring and this only seems to be happening with my silkie eggs. Any ideas?