I have these three RIR that I hatched from Exhibition birds. I know that sometimes, the hatchery ones are different than the good quality ones, like color and such, but wasnt for sure on comb development. Anyway, the guy I got them from says he can't realy tell sex till older as they all get somewhat of a comb early on, even the females. I have been told this by people who have hatchery ones as well. These are either all boys or all girls. They are about 2 months old now. Have never had any before. Any ideas?