I would remain hopeful that the one is a girl.
Obviously one is a rooster....If you look at my BCM's below, you will see I had one very clear male, one very clear female, then one who developed such that it worried me but proved to be a fast maturing female...she too was coppery fast with even a mossy back (red on the back). Over colored BCM females often lay the darkest.
But yes, if the red comes in on the wing bows, that is a tell tale sign of rooster.
I'm glad you were able to get some pics posted. X2 on LofMc's comments.