I am reasonably certain that your little buff chick is a Red Sex-link a.k.a Red Buff, Red Comet, or Red Star. This is a cross bred chicken that produces lots of medium to large brown eggs. Friendly and very pretty when all feathered out. If I am right, you will notice cream colored feathers with lots of dark orange or red streaks running through. As she gets older she will start getting more brownish red. She will be a nice reddish buff, not too red and not too cream colored. I love Red Sex-links!