I have 1 D'Uccle roo with 19 full sized and banty hens. Ii put 9 eggs from several girls and THEY ALL HATCHED. Of course, I picked eggs from the ladies I saw him with, but that's at least 5 different hens. I have a brown egg with some others the same colors/sizes I hatched before. I'm skeptical about the brown egg, but. Iim pretty sure about the others. He doesn't do too badly all things considered and him being just a little guy, too!