I did some mixes of my black Eng Orp roo and cuckoo Maran hens, and I loved them, 1st off they were sex linked so I knew right away which were males or females. most of the females I sold at hatching, the males I kept to butcher. They grew fast and filled out nicely. the first were butchered at 14 weeks and dressed out 4-5 lbs. the next batch I butchered at 16weeks and they dressed out 5-6+ lbs. I also had some blue copper Marans, about the same age, they dressed out very nicely also, but not as heavy as the mixes.