OK, I'm throwing this out there to get past my fear of being told Sam is a boy! I have three 4-week-old chicks (first-time chicken keeper) -- all different breeds. I've got a Barred Rock, a Buff Orpington, and what was sold as an Ameraucana that I'm assuming is really an Easter Egger.
My understanding is that the BO is typically the largest of these three, and the EE the smallest. Well, Margy, the BO, is the smallest of the three so far, and Francis, the EE is in the middle. I'm pretty confident that those two are girls. After several hours of reading and looking at pics here on BYC, I've gotten my hopes up that Sam, the Barred Rock, is also a girl, but I'm asking for your input to put my doubts to rest.
I'll attempt to post several pictures for you to make your judgements on....
and for good measure, here's a not-so-great shot of Margy and Francis:
Thanks for your help! ~Garnet