i got a dozen assorted silkies this summer. They are 8 weeks old now. I lost one to my beagle and out of the 11 left I think I have 7 males. Is 8 weeks too early to call hen or roo on these guys? I'm going to get rid of most of them before I'm feeding them all winter but I don't want to jump the gun and give away a bird that might be an egg layer.