This is day 1, im extremely excited and sad at the same time. Our favorite 2 roosters were killed by the big brat thats a RIR. Were letting our Amerecauna sit on eggs, since shes the best broody we have, I think she will be a great mother, shes very loving and protective. So were trying to get an egg that one of our dead roosters could've possibly fertilized. Shes sitting on 4 eggs, how old do fertilized eggs have to be to see results in candling?