In 1949, in Criccieth, Group Captain Leslie Bonnet discovered a colour mutation among his flock of Khaki Campbells and began selective breeding for the trait.
[1]: 199 Today, the Welsh Harlequin is a light-weight duck breed known for its vivid plumage and egg laying ability.
Females have a black bill and brown legs and feet, and their plumage is similar to a mallard but heavily frosted with white.
They have become a popular backyard pet in recent years due to the bird's calm demeanor and high egg production.
[1]: 199 As of 2016 the Welsh Harlequin in North America has jumped from critical to watched by the American Livestock Breeds Conservancy.