Do you find white rocks more productive than barred rocks and other color varieties, or do you just prefer white feathers?
Yep, heads and feathers above the other varieties I have tried of the Rocks~barred and Partridge~though I have no experience with the buff, silver pencil, Columbian or Blue. They are heavier than those varieties I have tried and are more consistent and long lived layers, hardier, have better feather loft and quality, and are more even tempered and well socialized than them. I find the separate varieties as different as night and day from one another, so they aren't just a different color but a different bird.