I have two young Ameraucana roosters that have started mounting my hens. They are going to a friends house this weekend. My main man is a Black Copper Marans roo, and I have 4 Marans hens. How long do I have to wait until I can be certain that their eggs have been fertilized by the Marans roo and not the Ameraucana roos? I know that chicken semen remains viable in hens for a period of time -- I just don't know how long that time period is. If I'm going to incubate any of my eggs, I want to make sure that they are Marans, not Ameraucana-Marans crosses. Thanks.