OK-I give up. I have 12 chickens. They are about 14 weeks old. One BR I can tell is a roo-he has started to get those lovely "hooks" as my kid calls them. He is also crowing and proud of it!! I have heard crowing in the henhouse when he is in the run, so I know that there is at least another roo in group. Hens can't crow can they??!! I have studied the pic's here and read, til I am overwhelmed, as to the difference to be able to tell a roo from a hen-brighter comb,"hooks", roo lighter colored (BR) then hen. I stand for hours looking at the flock, and all I can tell is that beautiful boy. They all seem to have about the same size combs, can't tell which comb is redder/brighter than another. So, here is the question- Since this boy is getting his "hooks" and all of the flock are the same age w/in a week, will I be able to tell shortly if any others are roos by looking for "hooks"? Is that the most destinguishing feature that separates the sexes? I don't want more than one roo, so really need to figure this out. Thanks for any help you veterans can give me.