Gotcha. If they quit at more than around a week along, they no longer show a distinct blood ring, but rather a fuzzy, sunken look.Huh, I tried ones and I indicated 2 chicken eggs as quitters based on bloodring, but since it was the first time I was identifying quitters, I left them in the incubator and surprisingly they hatched. I have not done it since then. I was only looking for a bloodring and if they move or not. So shortly - no, I cannot identify quitters yetI am thinking of doing it at Lockdown though, as I do not like so many eggs in the incubator.