These beautifully colored birds originally came from blue butterscotch parents—it is essentially the gray (green headed male) phase of a butterscotch. They are sometimes called Appleyard colored as they closely resemble the large Silver Appleyard Duck, but lack the restricted gene, so are not considered true Appleyards. This color results in green and black in place of the powder blue and dark brown in place of the buff compared to a regular butterscotch making them very striking birds.