I hatched 22 chickens in February. They are all around 6 weeks old now and out of 22 only 3 of them are male. There is a slight chance one of the remaining 19 are males but after examining each of them I am fairly certain they are not. I've heard pretty much every species is 50/50 male/female offspring. Is there something that can be done to screw with that or did I just get lucky and only get 3 roosters?