Mine are about 7 weeks now, and seem to be feathering at different rates also. I have one roo that seems to surpass all the others, with a couple of close seconds. The pullets are all about the same rate. I have two( a roo and a pullet) that are still real skittish but the others will come eat out of my hand after some initial 'he's here to kill us!' Running around when I first go out.