hmm...would the body build be different than a hen at this age (I thought SS were supposed to be a slightly heavier breed since they were dual purpose)? It is tall and slender (with loooong legs) and has almost no "egg cushion" on it's back side. I think I am sending it back to the breeder it came from anyhow (It is very aggressive with the older chicks I have right now, the other hens ignore them completely-twice today I've had to go and chase it away from the chicks after it cornered them), and get a more obvious older pullet.