Bantu,
I met a breeder of Cochin on here. I met with her to purchase eggs. When I got them she told me they just hit the floor in the car. From what I could tell there, they were okay. I took them home and set them out, planning to add them to the incubator the next morning. A few hours later, I thought I better check for cracks and candled. I found different stages of embryos in a couple eggs! One I figured was about day 12! I contacted her and quickly popped them into the incubator. The others did not develop at all. Less than a week, I heard peeping and that egg had externally pipped. I moved that one to my hatcher. He was a Cochin mutt. We adored that rooster but he wasn't really cute. He had a hooked beak. Anyway, the other eggs weren't fertile. So, I got about 5 fertile eggs with staggered hatching that were pulled from broody hens. When she replaced eggs, not one was fertile. She argued until she tried to hatch herself and found the same. I know how to look for a bullseye and I have great reliability with my bator. Not very happy with people taking advantage.