We have 6 Jersey Giant pullets (?) about 3 months old. 1 of them has developed with a tail that is clearly different than the others. The black giant below has a very upright and pronounced tail. The other five have smaller "flatter" tails like the blue below. The difference was noticible early on. At first we thought it was a difference in ages, but the other 5 never caught up to "the crow" Is this a rooster / hen thing? Or is there that much variation within the breed?