Hi , I bought four Australorp chicks that are about 4-1/2 wees old. My problem is that I wanted all pullets and I think have all roos . I looked at each chicks back legs and saw a nub where the spur would come out of . Do all chickens get them and just the roos are bigger ? I looked at the combs and they do look differnet . some were rounded in which i thought were roos and the pointed combs were pullets . I'm confused. Can someone help me ? I did get a couple of pictures. Thanks Phil i cant figure on how to send these pictures .