bantam?

We bought a silver lace wyandotte pullet ( she was approximately 8-10 weeks, the breeder told us she was 10 weeks but shexxxxxxq looked younger and her plummage was still developing). So when she was between 8-10 weeks she weighed 1.2 kg. A month late at approx 12-14 weeks, she weighed 1.4kg...

I've long since had suspicions about this little Mrs., but wanted to ask ya'lls opinions. This is my first supposed Barnevelder so I didn't really know what to expect, but I have heard that Barnevelders are suppose to be big birds weighing around eight pounds. Now this may be wrong, but this...