If you want an exact answer instead of guess work, then you need a better photo. She is not black. Her color appears to be an extremly poor example of a birchin. Perhaps, she is a Birchen Dutch (not sure if those even exist), or a Dutch cross with another light gamey breed like the OEG? Either way, breed her for fun if you would like more chicks. But, don't breed her expecting anything but pet quality fowl.
