I have a 16-17 week leghorn, it is really agressive, pecking at my production red pullets, but not bullying the other leghorn pullets. The leghorn is not the biggest chicken and it comb is not the biggest, but sits up stright while the other leghorns of the same comb leans to the side of her face. Just today i saw the leghorn hump a production red and bit another constantly. It has not layed an egg yet, but only two chickens did yet. Is this a hen like i thought or a rooster. Sorry about the bad picture.