I have never had bantams (or chicks for that matter) and they seem to be growing at a different rate than the others. Our two leghorns are going to get kicked out soon cuz they got huge. My bantam black austrolorp has the start of a waddle and comb, and my other two bantams are growing hints of their combs as well. I cannot be sure their genders at the moment and they are all at least 2 weeks old.