Ameraucana chicks... hens or roos?

[KealakekuaChick]

I have three 5 week old Ameraucana chicks that I purchased straight run. I'm interested in seeing if you can guess whether I have hens or roos. They are all docile except "Ameraucana #1". I suspect that one is a roo because of the way he carries himself and he is always kicking the other chicks. Sorry they didn't upload in order, but there are 2 photos of each chick.

 

[Griffinsong]

A bit early but I would keep a close eye on #2, that dark in the wings is suspicious.
#1 Could go either way at this point. #3 looks like a pullet.

 

[KealakekuaChick]

Thank you... this straight run thing is driving me crazy! haha #2 is my favorite, so I really hope it is a pullet. If #1 is a pullet, she is a brat.

She's been beating up on the others since she was about a week old!