A combination of traits make it unique among its kind; it is the world's only flightless parrot, the heaviest parrot, nocturnal, herbivorous, visibly sexually dimorphic in body size, has a low basal metabolic rate and no male parental care, and is the only parrot to have a polygynous lek breeding system.
Una combinación de rasgos que lo fa unico en a suya especie; ye l'unico loro d'o mundo que no ye volador, o loro más pesau, nocturno, herbivoro, sexualment dimorfico en a grandaria d'o suyo cuerpo, tien una baixa tasa de metabolismo basal, os masclos no paran cuenta d'os muixonetz y ye l'unico loro que tien un sistema de cría basau en a polichinia.WikiMatrix WikiMatrix