Hi, and welcome! Nice to meet you. 
Your Barred Rock is indeed a male. When getting pullets its not 100% sure you'll get that. 2/3 times I've gotten chick at least one was a male when they were supposed to be all pullets.

Your Barred Rock is indeed a male. When getting pullets its not 100% sure you'll get that. 2/3 times I've gotten chick at least one was a male when they were supposed to be all pullets.