I have a 16 month old white Orpington that's given no indication that it was a rooster . . . until several weeks ago. At that point, the "hen" has become very "ungentlemanly" toward the other hens. There is no crowing whatsoever, but there is plenty of mating behavior all of a sudden. Is this even possible at this late point? Or could it be something else? Don't all roosters crow? This one definitely has a different look in the eyes and a different demeanor . . . but I've never actually caught him/her laying an egg and I can't catch it to get a good look and check its feathers. The same flock (I got them as day-old) DID have 3 other roosters, but they exhibited evidence within a couple months. This one has shown absolutely no signs . . . until the obvious ones several weeks ago. Is this even possible to be SUCH a late bloomer??