The American Class contains thirteen breeds which originated in Canada or the United States.
[1]: 11 All are heavy breeds, and most lay brown eggs;[1]: 11 most are cold-hardy:[2] These three breeds originate in China; they are large, feather legged, and lay brown eggs:[1]: 21 This group consists of eleven breeds from Belgium, France, Germany, and the Netherlands.
They are mostly sprightly birds, the Faverolles being an exception:[1]: 70 This class consists of five breeds from the United Kingdom and one from Australia:[3] These breeds originating in Italy and Spain have white earlobes and tend to be productive layers of white eggs.
In general they are flighty, and exceptional free-range birds, with both evasion and foraging skills:[1]: 178 Other breeds are grouped in this class, which has three subclasses: Game, Oriental, and Miscellaneous.
The Game subclass includes the non-oriental game birds, the Oriental subclass includes mainly birds from Asia; the Cubalaya, however, is from Cuba.