I have 3 bp's. I agree that it does not seem that color and sex run along the same lines. But, out of my 3, 2 of which I know for sure are male, the other is suppose to be male, but I dont think is... I have noticed larger spurs on the 2 I know are males, the one I have come to think is female does have a bigger head, and the tail is much different, and on the males I have- not sure if it is gender related, but they got little like spikey ends of thier tails that turn up sort of...