I have 25 hens of various breeds , 3 of which are Ameraucana's and 1 rooster that is an Ameraucana. I want more Ameraucana's , so how do I accomplish that ? Do I need to separate the Ameraucana's from the rest of the flock and let them procreate ? How do I know when the eggs are fertile? I am lost on how to start this process. Thank you in advance.