There was a mixed group of corellas and cockatoos on the ground eating grass roots. One corella and a cockatoo had a bit of an argument with the cockatoo scaring the corella off, although the rest of the mixed group were eating without trouble. It was only a car shooting past that interrupted the group’s feeding, where upon they flew to a nearby tree. A cockatoo and corella flew to the same branch. I am unsure as to whether these were the same pair that had disagreed on the ground but the corella was giving the cockatoo the evil eye. Eventually the tension blew with the corella giving the cockatoo a loud squawk and raised wings, enough to make the larger bird depart. The corella started pacing on the branch where the cockatoo had just vacated. This bird then flew across the road where it joined another corella at a tree hollow. They both pecked away at the wood inside the hollow before one flew off to another tree further away.