I have a broody partridge cochin that has been broody for a while. My hubby doesn't want me buying chicks or fertile eggs to put under her. He prefers I use what we have. I have some Americanas he likes that I may want to breed with a certain roo (named Speckle). I know I have to put the roo in with the hen(s) I want him to breed, but how long before I know those eggs they are laying were fertilized by him as I have several others? Can I put more than one hen in with him? I have a chicken tractor I can use for the breeding pen. I would like to put possibly two of my Americanas in with him. They all free range during the day so not sure which roos have bred which hens and not sure how long it takes to get that roos out of her system?