Go compare those two birds to the picture I posted in this thread. You can see 3 birds, one left one right one center. The pic was taken at 7 weeks, left and right were cockerels the center one was a pullet
My experience with Wy's has been 1) The cockerels are if not always, usually rowdy as h*ll 2)The cockerels develop combs and wattles faster than the pullets, see picture. Wy's pictured are my 4th batch I have raised, I have raised 5, batch 5 were Gold Laced and I had one cockerel