My little chicks are a week old now! Wow they grow fast. My question is about differences I noticed in the 2 Blue Andalusians and the 2 Barnevelders. 1 of each breed has very big long wing feathers and the start of tail feathers, while 1 of each breed has tiny wing feathers and no tail feathers. I've head something about little roo's developing feathers more slowly than little hens. Has anyone found this to be true? Or do I just have pullets developing at different rates?