<p>The uploader told Storyful that the clip was filmed on December 20. We have not independently confirmed this.</p><p>Harley has always had a flair for the dramatic, and she shows her theatrical side again in this clip. Somehow sensing a rogue stack which has escaped her attention, the cheeky bird swoops in from another room and flattens the offending cups! Credit: YouTube/Harley the cockatoo</p>
