HELP fellow chicken people! My Black Jersey Giant went broody I decided to let her set on eggs that I had gotten from someone on FB. (we aren't allowed a rooster in city limits) Well ONE showed any signs of life but even then it wasn't a sure thing because it was such a dark shell so I knew it was also likely it wasn't fertile... then my friend offered me 6 eggs that were likely fertile but I had my doubts after my first batch showed little to no luck. Well I just went to candle them all and the 6 newbies are on day 7 and ALL are fertile. And the original ONE is on day 18. I hadn't planned on all that nor had I planned ahead. I'm worried if I let the 18 day old chick hatch under her, she will abandon the 7 day old eggs. I don't want any babies dying!!! Can I successfully hatch the 18 day old egg in an incubator?! THANK YOU in advance!!!!