Interestingly, we put a Balwen (black) ram lamb to nine ewes last autumn. Five ewes were his own breed, and four ewes were white Shetlands.... We only gave him 18 days, and the Balwen ewes were all first timers, but when scanned, all of the Balwens were empty and all of the Shetlands were carrying lambs....
Ho hum...
In the past, these crosses have come out all looking like Shetlands, save they have fluffy Balwen tails. This year, same result save for one little ewe lamb who is completely black, save for a white monk's cap! Her mother loves her and her Shetland looking twin equally!