I have had cuckoo, black copper and wheaten marans. The cuckoo is my favorite. She seems short legged, but is incredibly quick on her feet. She has been a very good broody - only goes broody once in the summer, and when she does she sees things through. The Black Coppers are larger and lay those gorgeous dark eggs but lack the cuckoo's vigor and intelligence. Their persona is more stately. They too make good mothers. Both types have laid well when they are laying.