Well, I guess I have some confirmation as No 2) is now fighting with the bantam australorp roo so would assume boy!! every time they walk past one another they are at it. They are only 12 weeks too.
No 1) Well he/she has rounded neck feathers but looking more like a rooster tail, friendly but then pecks you. he head well I thought boy but has not changed much and I would have thought it would be redder and larger by now?
No3) I do think pullet but will have to wait for confirmation.
No.1) Still have no idea. But am now learning toward pullet. looks exactly the same but bigger. No crowing and does sit when you put your hand on her back, then pecks me.