Manx cat
The British breed has never been imported to the United States. In 1958 some tail-less birds, supposedly of Iranian origin, were crossed with other breeds to produce an approximation of the British type, and the name "Manx Rumpy" applied to them, perhaps by analogy with the tail-less Manx cat. The Livestock Conservancy recommends that they be called "Persian Rumpless". They are not recognised by the American Poultry Association. They are good layers of brown eggs, and may also occasionally lay white, blue, or green eggs.