It turns out it was a roo! Very calm, inquisitive, and gentle. My kind of bird. ^-^ He definitely had me guessing until he started crowing. I could have sworn he was a she.
That's what I'm leaning towards also, but its very red comb and hint of wattles threw me off. All the other chicks are pea combed or have yellow combs beside that one and the rooster.
I have ten chicks, unsure on the ages, and I'm positive I have two roosters. There's a third chick, however, that I'm unsure of. He has a red comb, but it is not as large as the other chicks, and he is not showing the coloring the other similar rooster has. This chicks are all mixes, I believe...