Hi! I have 4 different chicken coops (to house over 51 chickens and 2 ducks) since I want to breed some of my chickens, I keep them separated from the others. What I'm grateful for is that when I free range all at the same time, they go into their correct coops at night by themselves (except ONE hen - she must be a black sheep ha ha). Is this usual chicken behavior? On another note, what is the likelihood that when I let all of them out together, they will only breed with their own kind?