I read somewhere that partridge Cochins were the hardest color to sex. The males and females are very similar. I hope you have more pullets then you think.
As far as I know! I was just looking at a new cochin thread, and folks are voting pullet for one that looks just like my buff roo. my pullet at 16 weeks still has no red on her face at all. i'm still holding out on my blue though! i'm getting rid of the partridge ones!