So i am planning to buy a gamefowl and a laying hen and then i will have 2 hens because my friend upstairs has a hen already and he says i can use his hen in the backyard cage with my gamefowl and hen.So then these two hens will have chicks and they might inbreed since the small quantity but since there are also other there will be a small change in the blood every now and then so then is it okay to have start with 2 hens and not buy anymore and just let the offspring breed without fear?