Sulphur-crested cockatoos are noisy, intelligent parrots that have an annoying habit of gathering in flocks to vandalise wooden buildings. Wild cockatoos sometimes form unusual bonds with humans, seeming to like our company. These clever birds are fascinating to watch, or are they watching us?

Australia's Remarkable Wildlife Series
Australia has been an island continent surrounded by oceans for millions of years. During this long, long time, its animals have evolved into species that are unique and precious. Covered with feathers, fur, spikes or scales, Australia's wild creatures can be beautiful, frightening and even dangerous. Find out about Australia's remarkable wildlife in this series, then look at them in a whole new way.