Male or female Barred Rock?

[BantamRun]

I was wondering if anyone can tell me if this Barred Rock is a male or female? It is about a month and a half to two months old I believe. We purchased them at our local farm store. They were all supposed to be pullets but this one is a lot lighter than the rest. It is just a little bigger also. Here are a couple of pictures.

 

[keesmom]

Cockerel.

 

[jonsccm]

Looks like cockerel...

 

[BantamRun]

That's what we were thinking. Thanks for verifying. I have never had any of these. I have heard they can be pretty aggressive towards people and other roosters. Has anyone had this problem with them?