I HAD a large fowl brown red hen that laid an almost-white egg with just a faint tinge of blue, but sold her recently at a swap meet to some folks who just wanted laying chickens. I do think the correct head is very important to the breed, and there are many features to consider. I look for a beak that is deep at the base and not overly long. Then I look for some downward curve to it, especially the lower mandible. Of course long, hooked upper mandibles are to be avoided. I also try to select for wider heads, but that can be a tough task in some varieties of bantams.