The nice thing about the rir over barred hen cross is you can easily sex them at hatch. This is great for folks selling chicks, they can guarantee pullets. For the rest of us, it can give us an idea how many pullets we have so we know how many more eggs to hatch to maintain whatever number we want for our laying flock. They also lay great, and putting the pullets back under your rhode island red roo should give you good layers still, and hybrid vigor is nothing to sneeze at.