I have 5 silkies who are 5 months old. My blue is most def a male. He is much bigger than the others, has noticeable comb nose whatnot and more importantly is crowing. My buff one has a teeny tiny nub on the beak, nothing like the blue has. Could it possibly still be a hen? None of the others has anything on the beak and since they're all the same age wouldn't they be the same development etc if buff is a roo? Have to rehome my blue this weekend and same fate for buff if.... Sorry - can't get a good enough pic of the tiny comb.