That cute little face is still not as red as I would expect in a cockerel! I agree with you, purpletiger that there are no signs of hackle or saddle feathers. I do see the pointy tail feathers, which is making this even more of a mystery. The feathering of a cockerel should have started by this age, I would think. Maybe the feathering is slow to come about in this bird. Just making generalizations here, but "super friendly" and "bites kind of hard when investigating" sound like cockerel behavior, although some hens can have an attitude too. Gosh, wish I could be more helpful! The expression makes me think of a hen. So this chicken is all over the place!