I had this one pegged as a rooster at 3 weeks old for a big very pink comb, muddier lacing pattern, and attitude (I did not get great pics at that time). However, at 10 weeks I'm wondering. Comb hasn't grown a huge amount, and saddle area feathers looking rounded to me (the red on the saddle feathers comes to a point, but the blue lacing and feather edge is way more rounded). I don't have other blrw chicks to compare this one with, which is making it harder.