Cockatoos and Object Permanence (video) University of Vienna Loading video... Caption How do you know that the cookies are still there although they have been placed out of your sight into the drawer? Alice Auersperg and her team from the University of Vienna and Oxford show that "object permanence" abilities in a cockatoo levels apes and four year old human toddlers. Credit Alice Auersperg Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.