First let me say that I have a 100% hatch rate with my own eggs from my hens. Now, I bought a dozen wheaten penedescenca eggs off ebay. They came, let them rest, put them in the 'bator. Candled a couple times, some didn't develop at all, about half quit half way through. 2 eggs made it to lockdown. It is now day 24. I could still see movement in 1 and I opened it. It died (which I feel awful about, but I'm 99% sure that it wouldn't have hatched). The membrane was still very bloody but the chick looked fully formed (I didn't take it out of the egg all the way, jut opened the top). All the other eggs I set hatch on day 20, 21 at the latest. Was this one just an odd one, maybe genetic issues since most quit halfway through incubation? I'm bummed about it, just wondering what might have gone wrong.