no bloodline tracking at a high level. my guess is because chickens are considered more dispensable historically, as a relatively short lived farm animal whose purpose is eggs and meat and more baby chicks. Show chickens need to meet physical standards, but that market is certainly smaller...
APA: American Poultry Association. There is a book of standards for recognized breeds. “Ameraucana” is a recognized breed. “Americana” and “Easter Egger” Are just mixed breeds.