I'm leaning toward rooster because it appears to me in the top pictures that it is beginning to develop the longer, pointed saddle feathers of a rooster, but then I'll be the first to admit that my eyes aren't as good as they used to be, and I might think I'm seeing what is not really there. If I had only that last pic (from the front side to go by I would lean toward pullet). I hope for your sake it does turn out to be a pullet.That's a whole lot of people saying rooster. A few follow up questions... what makes you think rooster?