any of numerous large noisy chiefly Australarian parrots esp. of the genus Kakatoe that are often kept as cage birds many (as the pink) having large erectile crests ..., kakaduulased - Austraalias, Uus-Guineal ja Tasmaanial elavate papagoiliste alamsugukond, 17 liiki. Enamikul on valkjas või roosakas sulestik, lagipeas asetseb suur suletutt.