Thanks ! Great Information.Araucana, according to the breed standard approved and accepted by the American Poultry Association, have yellow skin. They must be rumpless and tufted to meet the breed standard. I am not referring to the landrace types in South America, but the recognized breed in the U.S.
The Ameraucana has muffs (different from tufts), tails, and only have white skin with a 'blue' wash on the legs.
Americana, Americauna, and other misspellings are the result of hatcheries trying to dupe uneducated buyers into thinking they are getting a rare breed. They are, in reality, Easter Eggers.
In the U.S., the Araucana breed and the Ameraucana breed were derived from the birds most consider Easter Eggers.
When these birds were first imported into the U.S., they were all called Araucana and nicknamed 'Easter Eggers.' A group of breeders began breeding for a specific set of traits and got those birds recognized and accepted as the Araucana breed. The birds that didn't meet the breed standard for the recognized Araucana, became known as Ameraucana.
Another group of breeders began breeding their birds towards a common set of standards and their birds were recognized as the Ameraucana breed we have today. The hatcheries never bothered to update their breeding practices or their marketing to reflect this change. They continued to sell their birds as Ameraucana, even though they do not conform to the breed's standard.
When you buy hatchery Ameraucana in the U.S., you are buying the unrefined descendants of the originally imported birds.
When I say Araucana, I'm referring to the recognized breed in the U.S. I am not referencing the obscure landrace breeds of South America.