These chicks all hatched at the same time, they are 10 weeks old. We have called the little one "Romeo" since birth but I don't think it's a roo. At about 2 weeks old he stopped growing like the others, would not stand up, fell over a lot, and developed a head tremor. I separated him and kept him in the house for about 4 weeks until he got stronger. My question is has anybody else ever had this happen? Was it a disease or is he a bantam?