Sultan ChickenThe Sultan Chicken is critically endangered. This breed is ofRead more. San Clement Island GoatsThe San Clemente Island Goat is a critically endangered breed. Read more. Royal Palm and White Holland TurkeysRoyal Palm and White Holland Turkeys are classified as “threatened”Read more. Malay ChickenThe Malay is one of the rarest breeds of poultryRead more. Dales PoniesThe Dales Pony is a critically endangered and absolutely fabulousRead more.