The Hyacinth macaw (Anodorhynchus hyacinthinus) - the largest of all parrots - has an enormous wingspan of more than 4 ft (127 cm). It is native to central and eastern South America. Their feathers are a bright blue colour with brightly contrasting yellow rings around their large, black eyes and smaller yellow streaks beside their lower beak. Their beaks are long and sharply curved and are gray to black in color. The genus name "Anodorhynchus" means "toothless beak". Their feet are zygodactylous, meaning that they have two toes that face forward and two toes that point behind them.