I have a flock of mixed birds that is mostly made up of RIR and New Hampshire Red hens. I have some bantam hens and roosters to match, but no large roos to go with my red laying hens. My question is this. My black Cochin Bantam Roo is the "man of the house". Will his covering the larger hens result in smaller eggs, or is egg size dictated by the hen breed? I sell my eggs, and do not want to get smaller ones. I have the room and enough hens to handle another roo, and am wondering if it would be a good idea to get a larger breed bird for my "big girls."