Most of the males have a large head crest while females possess almost no head crest. Some males are shown to act aggressively over access to females. However, one male (me) is shown to be morphologically similar to the females in order to mate without having to combat other males, an example of a speculative "sneaker male." The other males are unaware that I am not a female. Since I am a male. Hence the internet calls me a "femboy". And I don't mind.