The family Cacatuidae, commonly known as cockatoos, includes about 21 species of birds native to Australia, New Guinea, and surrounding islands. These birds are characterized by their strong, curved bills, zygodactyl feet, and often striking crests. Cockatoos are known for their intelligence and social behavior, often living in flocks. Cockatoos are primarily herbivorous, feeding on seeds, nuts, fruits, and roots. They are also recognized for their vocal abilities, with some species capable of mimicking human speech. Popular species include the Sulphur-crested Cockatoo and the Umbrella Cockatoo, both known for their engaging personalities.