I picked up a chicken today from a lady she wasn't sure be thought maybe it was a hen. it's supposedly a silkie/ old English game mix bantam about 4 months old. what do you guys think rooster or hen?

I appreciate any help. I think it's a beautiful bird and I have other bantams the same age but I need to know if it's a male or female before I make any introductions.. thank you..
I appreciate any help. I think it's a beautiful bird and I have other bantams the same age but I need to know if it's a male or female before I make any introductions.. thank you..