I am starting my second flock of chicks, but am running into some difficulty finding the breeds that I want hatching around the same times. So far I have 9 different breeds that hatched on Thursday, 3/24 including Barred Rock, Wyandottes, Americaunas, and others. In this mix I also bought a silkie chick straight run, but it was the only chick the hatchery had left. I would really like to increase my chances of a female silkie by buying a couple more, but cannot find any that hatched around the same times. I finally found some that are 2 weeks old, but I also found some that will be hatching on 3/31. Would the older ones be better for the flock, or should I purchase a couple that hatch on 3/31? Help!