Are you sure there is not a silkie in the mix, the poof on top of their head looks like my 3 did when they were 5-12 weeks old. I have 2 - 12 week old's who hatched from a Banty Broody Mama. Last week the one we knew was a roo started crowing, the same one had full waddles by 7 weeks. The other one looks like it's silkie grandpa, so I will have to wait to see what it will be. "No Name", is already doing the calling sound when food in put in their pen, to call his sibling over to eat. He also tried to mount one of my EE, who comes in to their pen to steal food. And he will challenge his Father & Uncle, if they get to close to the fence.