A cockatoo is any of the 21 species of parrots belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. Along with the Psittacoidea and the Strigopoidea, they make up the order Psittaciformes. From Wikipedia
By tracking 525 fountain-use attempts over 44 days, researchers revealed that the drinking behavior has spread through social learning among western Sydney cockatoos.
